impellers的例句（impellers在句子中的用法）

• Mainly by the impellers, pump body and pump cover composition. 主要由叶轮 、 泵体和泵盖组成.
• 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.
• Welding is one of the important technologies in impellers " artifactitious . " 焊接是 叶轮 加工的重要工艺之一.