During the normal oil extraction process, a working fluid level is tested anytime, since the communicating hole always communicate the tuning and an annular.
在正常抽油时，由于连通孔始终连通着油管和油套环空，因而可随时对动液面进行测试。
The paper elaborately introduces the working principle and characteristic of the radar fluid-level meter, the composition of the survey system, type selection requirement and installed essentials etc.
本文详尽地介绍了雷达液位计的工作原理及特性，测量系统的组成，选型要求和安装要点等。
Through working out the differential equation of motion of the pseudo-fluid level in annular space, the depth of the...
通过求解环空拟液面的运动微分方程序得出以此，可以确定抽油井正常生产时环空拟液面的深度。
Through working out the differential equation of motion of the pseudo-fluid level in annular space, the depth of the...
通过求解环空拟液面的运动微分方程序得出以此，可以确定抽油井正常生产时环空拟液面的深度。
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