顶销，用于连接起落架扭力臂两部份的销子。
APEX pin, a pin for joining the two sections of the torsion link on the landing gear.
在筒状活塞式的发动机中，活塞与连杆上端通过一个水平销子连接。这是最常见的一种结构。
In trunk-piston engines, a horizontal pin within the piston is encircled by the upper end of the connecting rod. This by far the most common construction.
电位计的孤刷直接与销子连接。
The wiper of the potentiometer is connected directly to the spindle.
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