摘要：在临近既有桩基深基坑开挖过程中，为了保证深基坑本身和既有桩基的安全，需要对深基坑和既有桩基变形进行监测。本文基于某软土地区近接既有桩基深基坑现场监测工程，提出布点
<正>By the end of 2009, the total length of existing oil and gas pipelines in China had reached 75×103 km. The pipelines include 38×103 km of gas pipe
<正>China has successfully excavated natural gas hydrate, in permanent tundra in the south margin of the country’s northwestern Qilian Mountains, according to
<正>Introduction Optimized maximum reservoir contact technology (OMRC) is developed based on the maximum reservoir contact(MRC) technology, which is a kind of t
以兰州在建的轨道交通工程为例，根据工程施工特点，对项目建设过程中不同工程区的水土流失特征及危害进行了系统分析．在此基础上从项目建设实际出发．提出了具体的水土流失防治措施
<正>2010 CNPC(China National Petroleum Corporation) Midyear Working Conference on Engineering Technology (hereafter called the Conference)was held in Beijing on
<正>Entering the 21 st century,China's domestic energy consumption has remained a steady growth as economy developed rapidly.Owing to the severe pollution c
<正>PetroChina has pledged to step up acquisitions and boost cooperation with global oil companies after profit growth slumped because of State controls on fuel
观察小切口非超声乳化和超声乳化术治疗白内障青光眼的临床对照研究。选取甘肃省武威市人民医院收治的白内障青光眼患者46例作为研究对象，按照随机数字表法分为研究组和对照组
对阴影信息的研究是高分辨率遥感影像研究的重要问题,但是,在高分辨率遥感影像中,水体、暗色植被和偏蓝色地物会影响阴影检测精度,基于HSV色彩空间与主成分变换法,文中提出了一种检测阴影的阴影指数PSI。选择两个试验区,采用主成分变换法与PSI进行阴影区域检测并对检测结果进行比较分析,结果表明,在没有深色地物的情况下,PSI能够有效的区分阴影区域与水体、暗色植被和偏蓝色地物。在有人工草坪的情况下,PSI