Based on the principle of mass balance, the Pseudo-Level Depth Finder can attain the true level by testing annular gas rate.
根据物质平衡方法设计的拟液面测试仪，可通过测试油井环空排气量来确定油井的真实液面。
Based on the principle of mass balance, this paper deals with rules of. motion of the pseudo-fluid level in the annular space in the process of testing the pumping oil well.
本文应用物质平衡原理，研究了抽油井环空拟液面在测试过程中的运动规律。
Pseudo-random sequences with optimal properties such as correlation, high linear spans, balance and long period are widely used in CDMA system, spread spectrum and hopping communication systems.
具有优良相关性，大线性复杂度，平衡性，长周期的伪随机序列广泛应用于CDMA系统，扩跳频通信系统。
应用推荐