pillar crane是什么意思

用法例句

By researching on the structure and elements of rotated plunger pump,and the structure and geometry of organ was analyzed,some formula was obtained.

通过研究旋转柱塞计量泵的结构和工作原理,分析其结构和传动机构的几何关系,得出一些设计计算需要的公式,介绍了该类泵一般的应用场合以及旋转柱塞计量泵的性能和应用情况。

Velocity problems in the experiment of liquid viscosity measured by rotary column method;

“转柱法测液体粘度”实验中的速度问题