A seal assembly for use with a rotating shaft.
一种用于旋转轴的密封组件。
A rotating shaft inside the 99%-evacuated glass globe has four attached vanes.
一中空玻璃圆柱里有一有四个桨的转轴。
Rotating pump shaft by hands, sure to guarantee easy to rotate.
用手转动泵轴，必须保证运转灵活。
Rotating pump shaft by hands, sure to guarantee easy to rotate.
用手转动泵轴，必须保证运转灵活。
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