In the background of the continuous development of social economy, the level of mechanization and automation has been significantly improved, and the demand for energy is also increasing. In order to meet the energy demand of various industries, we should strengthen the construction of energy power engineering, so as to ensure the economic development of the country. At the same time, energy power engineering has a direct connection with people’s life, such as agriculture. In order to protect people’s life, we need to vigorously develop agriculture, and the development of agriculture cannot be separated from production. Agricultural production requires the use of electrified and mechanized equipment, which requires the support of a large amount of energy. In addition, energy and power engineering also involves national security issues, such as national defense. National defense security needs to be equipped with a variety of weapons and equipment, which need to use energy. In a word, energy power engineering affects the development of our country and people’s life, so we should pay attention to the development of energy power engineering.
     This book will discuss energy, solar energy utilization technology, wind energy utilization technology, water and marine energy utilization technology, biomass energy utilization technology, nuclear energy utilization technology, geothermal energy utilization technology, new energy application in power engineering, etc.

前 言

在社会经济不断发展的背景下，机械化、自动化水平得到了明显提高，对能源也提出了越来越高的需求。为了满足各行业对能源的需求，应加强能源动力工程的建设，从而保障国家的经济发展。能源动力工程与人们的生活有着直接的联系，比如农业，为了保障人们的生活，则需要大力发展农业，而农业的发展离不开生产，农业生产则需要使用电气化、机械化的设备，这就需要大量能量的支持。另外，能源动力工程还涉及国家安全的问题，比如国防方面，国防安全保障需配备各种武器设备，而这些设备就需要使用能源。总之，能源动力工程影响着国家的发展、人们的生活，因此应重视能源动力工程的发展。
     本书将对能源太阳能利用技术、风能利用技术、水能和海洋能利用技术、生物质能利用技术、核能利用技术、地热能利用技术、新能源在动力工程中的应用等方面进行一定的论述。

It has been a long time since human beings dealt with rock and soil to solve problems related to clothing, food, housing and transportation, and they have accumulated rich experience. With the development of modern engineering construction to a larger, deeper, higher and heavier direction, it brings a series of new problems to geotechnical engineering. The traditional and experienced geotechnical engineering technology has been unable to meet the requirements of quality, speed, environment, durability and safety in contemporary engineering construction. Geotechnical engineering has established its own more complete system, more powerful theory, more advanced technology, as well as the operation method in accordance with the objective laws, so that geotechnical engineering will rise from technology to science, and people can use science to develop technology and innovate technology, which is the general trend.
      Due to the wide range of geotechnical engineering, its personality under different conditions is also very obvious. Although the countermeasures and methods to deal with the new problems of geotechnical engineering change with each passing day and emerge in endlessly, its exploitable potential is still great. Due to the limited space, we must work hard on “highlighting the theme, setting up the structure, focusing on the ideas, studying the laws, pointing out the direction, and promoting the deepening”. Instead of seeking for more, we should seek for the precise method, and pay attention to the thinking method, theoretical basis, basic principle and typical analysis of understanding, analyzing and solving problems. It can not replace the important role of the existing large amount of materials and documents, and can only provide necessary help for better utilization and understanding of the existing large amount of materials and creation of new materials. The establishment of system of the book and the analysis, classification or evaluation of some problems naturally reflect the author’s own understanding, experience and views. It can only be regarded as a kind of opinion in the phenomenon of “Schools of Thought Contend”, aiming to create a loose atmosphere and environment for academic criticism and in-depth discussion.

前 言

人类和岩土打交道来解决自己衣、食、住、行中的有关问题已经年代久远，也已经积累了丰富的经验。由于现代的工程建设不断向更大、更深、更高、更重的方向发展，它又给岩土工程带来了一系列的新的问题。传统的、经验性的岩土工程技术，已经越来越不能够与当代工程建设在质量、速度、环境、耐久以及安全等方面的要求相适应。岩土工程建立起自已更完整的体系，更有力的理论，更先进的技术，以及符合客观规律的运作方法， 使岩土工程从技术上升到科学， 用科学来发展技术、创新技术已是大势之所趋。
       由于岩土工程的涉及面十分广阔，它不同条件下的个性也十分明显。虽然处理岩土工程新问题的对策和方法日新月异，层出不穷，但它的可开发潜力仍然很大。因篇幅有限，必须在“突出主题、搭好结构、着重思路、研究规律、指明方向、推动深化”上下工夫，不求全求多，但求精求法，注重于认识问题、分析问题和解决问题的思维方法、理论依据、基本原则与典型剖析。它不想替代、也无法替代已有大量资料文献的重要作用，只想尽量为更好地利用与理解现有大量资料和创造新的资料提供必要的帮助。本书体系的建立和对一些问题的分析、分类或评价，自然反映了编著者自己的认识、体会与观点。它只可视为“百家争鸣”中的一种见解，以便为学术批评与深入探讨创造一种宽松的气氛与环境。

In geotechnical engineering, exploration technology is its basic work, which plays an important role in the operation quality of the whole project. Due to the late start of exploration technology in China, there are still some problems in practical application. It is necessary to strengthen the analysis and evaluation of exploration technology data and improve the level of exploration technology according to the actual exploration experience, so as to carry out effective geotechnical exploration work and promote the sustainable and healthy development of society.
    Geotechnical engineering geological exploration engineering is a long-term work, with a long way to go. With the application of new technology, new methods and new materials in geological exploration engineering, geological disaster prevention measures and construction technology will step into a new stage. With the rapid development of China’s economy, the technology of engineering geological exploration has been constantly improved. Both the technical level of the exploration personnel, the exploration equipment and the exploration technology have made great progress. In order to keep the quality of geotechnical engineering, it is necessary to explore the basic geology of the project, so as to understand the specific situation of the basic geology and select appropriate treatment measures.
     Because there are different foundation soils in different regions, it is necessary to understand the main technical contradictions and problems in geotechnical engineering exploration. Only when we have a complete understanding of the intention and requirements of engineering design, can we carry out geotechnical investigation. In the exploration, it is necessary to analyze the design of underground engineering, engineering foundation and problems that are easy to occur in the construction, so as to put forward more scientific and economic solutions.

前 言

在岩土工程当中，勘查技术是其基础工作，对整个工程项目运行质量具有重要的作用，我国因勘查技术起步较晚，在实际应用当中，还存在一些问题，需要根据实际勘查经验，加强勘查技术资料分析评价，并提高勘查技术水平，以展开有效的岩土勘查工作，促进社会的持续健康发展。
      岩土工程地质勘查工程是一项长期的工作，任重而道远。随着新技术、新方法、新材料在地质勘查工程中应用，地质灾害防治措施和施工技术必将迈向新的台阶。我国经济的快速发展，工程地质勘查技术得到了不断的提升，无论是勘查人员的技术水平还是勘查设备、勘查技术等都有很大的发展。要想保住岩土工程的质量就要对工程的基础地质进行勘查，这样才能了解基础地质的具体情况，选择合适的处理措施。
      因为不同的地域有不同的地基土，所以在进行岩土工程的勘查工作时，一定要了解工程最主要的技术矛盾和主要的技术问题。只有完全地了解了工程设计的意图和设计的要求才能够进行岩土的勘查工作。在勘查时，要分析地下工程的设计、工程基础和在施工时容易出现的问题，这样才能够提出更科学、更经济的解决办法。

Ultrasound diagnosis has the characteristics of no injury, no pain and various display methods to human body, especially for the exploration of human soft tissue and the measurement of hemodynamics of cardiovascular organs. It has the advantages that other methods can not compare, and has become one of the most widely used diagnostic means in modern medicine. Ultrasound medicine has been widely used in the prevention, diagnosis, treatment, rehabilitation, monitoring and general survey of human diseases. Also, with the improvement of people’s health needs, the depth and scope of its application are expanding.
    In recent years, with the rapid development of computer, information technology, electronic technology, new piezoelectric materials and other high-tech, as well as the increasing demand for clinical diagnosis and treatment, new technologies of ultrasonic medicine and imaging emerge in an endless stream, the system of ultrasonic medicine and imaging develops to a high level, and the quality of image becomes increasingly perfect.
    Combined with the current development of ultrasound medicine, this book will introduce the related theories and knowledge of ultrasound medicine in detail from many aspects, and elaborate the relevant contents of current technology of ultrasound medicine and imaging. The content is comprehensive, systematic and practical, which can be used as a reference for engineering and technical personnel engaged in ultrasonic instrument sales, application training and hospital equipment management. Due to the limitation of the author’s level, fallacies and omissions are inevitable. Readers are welcome to criticize and correct them.

前 言

超声诊断具有对人体无损伤、无痛苦、显示方法多样的特点，尤其是它对人体软组织的探查和心血管脏器的血流动力学测量有其他方法不能相比的优势，已成为现代医学中使用最为广泛的诊断手段之一。超声医学已经在预防、诊断、治疗、康复、监护和普查人体疾病中得到了广泛应用，并且随着人们健康需求的提高，其应用的深度和广度都在不断扩大。
    近年来，随着计算机、信息技术、电子技术、新型压电材料等高科技的迅速发展和临床诊断及治疗的需求增加，超声医学与影像新技术层出不穷，超声医学影像系统向高层次发展，图像品质日趋完美。
    本书结合当前超声医学发展现状，将从多个方面详细介绍超声医学相关理论与知识，阐述了目前超声医学影像技术的相关内容。内容全面、系统、实用，可供从事超声仪器销售、应用培训及医院设备管理的工程技术人员学习、参考。由于作者水平所限，谬误和疏漏之处在所难免，恳请广大读者朋友批评、指正。

Landscape construction is an important project in the process of urban construction. To some extent, the level of landscape construction reflects the level of urban construction and development. With the rapid development of urbanization, the urban ecological environment is getting worse and worse. In order to promote the sustainable development of the city, people pay more and more attention to the construction of landscaping. More and more people realize the importance of environmental protection. Many first-tier cities have begun to vigorously develop ecological construction, while some small towns have begun to pay attention to landscape planning and construction, and want to develop themselves into cities with characteristics through ecological protection and construction. At the same time of landscape planning and design, the original ecological protection is essential. The construction of ecological garden can provide a certain leisure area for people’s life and let people feel the natural flavor. Landscape planning and design has also laid a solid foundation for the development of urban environment, which can not only improve people’s quality of life, but also meet the development needs of modern society and move towards sustainable development. This book systematically summarizes the theoretical knowledge of landscape design, and provides reference guidance for relevant practitioners.

前 言

园林建设是城市建设过程中的重要工程项目，园林建设水平在一定程度上反映了城市建设及发展水平。随着城市化进程的不断加快，城市生态环境日益恶劣，为促进城市的可持续发展，人们越来越重视园林绿化建设工作，越来越多的人们认识到了环境保护的重要性，很多一线城市开始大力开发生态建设，而一些小城镇也开始注重园林规划建设，想要通过生态保护建设将自身发展成为具有特色的城市。同时越来越多的人们认识到了环境保护的重要性，而在园林规划设计的同时原生态保护是必不可少的。生态园林的建造能够为人们的生活提供一定的休闲区域，让人们感受到带自然的气息。园林规划设计也为城市环境发展奠定了坚实基础，不仅可以提高人们的生活质量，也能够符合现代化社会的发展需求，朝着可持续化发展方向
前进。本书系统归纳了园林设计理论知识，为相关从业者提供可参考的指导资料。