research on leak detection of fuel pipe based on analysis of negative pressure wave

leak detection and location system for oil pipe based on negative pressure wave method

基于负压波法的输油管道泄漏检测定位系统

field test of leakage light hydrocarbon pipeline monitoring technique based on negative pressure wave

轻烃管道负压波泄漏防盗监测技术现场试验

research on filtering technique for negative pressure wave signals

负压波信号的滤波技术研究

judgement of leakage position in oil transfer line by negative-pressure wave principle

利用负压波原理判断输油管线泄漏位置

application of the negative pressure wave theory in the leak-detecting system of trans-porting-oil pipe

负压波定位理论在输油管道泄漏监测系统中应用

correlation analysis in developing accuracy of pipe leakage detection system of negative pressure wave

用相关分析提高管道压力波泄漏检测系统的定位精度

inspection and orientation of pipeline leakage with negative pressure wave technique

负压波管道泄漏检测与定位技术

in this paper, the negative pressure wave method for pipeline leak detection and location of.

本文研究了负压波法在管道泄漏判断和定位中的应用。

global oceanic contribution to annual polar wobble

全球海洋对极移周年运动的激发

it then developed into a polar wobble, with the n pole being pushed away.

然后这个摆动发展为了一种极性的摆动，地球的北极被推离。

report of duck toxicosis on pollution of river by sulphuric acid

浓硫酸污染河道造成鸭中毒的报道

analysis on present situation of pollution of river and its control countermeasures in jincheng city

晋城境内河流污染现状分析及防治对策

the pollution of river was one of the outstanding problems of the water resource in our country.

河流污染是我国水资源的突出问题之一。

pollution of river also affects people and environment.

河流污染也影响着人类和环境。

in addition, pk operation in the game lays stress on the refreshing and mighty opposite sense.

最后，游戏中PK操作强调爽快感、对峙感。战斗感觉非常爽快。

geographical differences, linguistic barriers, and the wish to preserve local cultural traditions acted in the opposite sense.

地理上的差异，语言上的障碍，和维护地方文化传统的要求，又使世界在相反的意义上运行。

application of medium caving support in medium - thickness seam

中位放顶煤支架开采中厚煤层的实践

approach on changing product structure with medium thickness seam dealing system

改变中煤处理系统产品结构的探讨

on technology with gas prevention and control of gob- side roadway excavation in medium- thickness seam

中厚煤层沿空掘巷瓦斯防治技术初探

preliminary discussion on seam infusion in high-gassy medium-thickness seam face with caving mining method

高瓦斯中厚煤层放顶煤工作面煤层注水初探