On the basis of a large number of field data, the regression equations of displacement coefficient, down-hole power loss and surface efficiency for pumping wells are established.
本文以大量的现场测试数据为基础,建立了抽油机井排量系数、井下功率损失及地面效率的回归方程;
2
This article reviews the physics of angular momentum transfer and loss in optical pumping and spin-exchanging collisions.
评述了光抽运和自旋交换碰撞中角动量转移和损失的物理。
3
The innovative design of the automatic gas pipe effectively reduces the loss of water through evaporation and pumping to ensure that the valve can perform its best function.