impellers例句
The
impellers are kept in their proper relationship to each other by spur gear.
液轮之间借助于正齿轮保持彼此正常的关系.
Mainly by the
impellers, pump body and pump cover composition.
主要由叶轮 、 泵体和泵盖组成.
Welding is one of the important technologies in
impellers " artifactitious . "
焊接是 叶轮 加工的重要工艺之一.