联轴器是把相邻的两个轴端连接起来的装置.A coupling is a device for connecting the ends of adjacent shafts.主要有齿轮 、 轴 、 泵体 、 安全阀 、 轴端密封所组成.This series are mainly gear , gear pump , valve, pump body, axial end seal.敞开操纵不正护罩, 发不隐轴端动拉螺母已松不静.Open...
洞口大半都淹没在湖里。Most of the mouth of the cave was submerged in the lake.湍急的水流奔涌过洞口。The water rushed through the holes with great rapidity.两艘船隆隆地从洞口开出，进入了开阔的水域。Both boats purred out of the cave mouth and into open water....