为了检测汽车座椅支架上下滑道的阻力，设计了滑道阻力的检测装置。
An automatic detection device was developed to measure the frictional resistance force between the tracks on the brackets of car seats.
一种跌落试验机台，包括一支架、一具可上下伸缩的芯杆的气缸、一气爪及一控制电路 。
The invention discloses a dropping tester table, which comprises a support, a cylinder with an up-down telescopic core bar, an air claw and a control circuit.
阀杆、塔型盖、格兰通过填料压紧密封，阀杆与执行机构通过固定于支架上的推力螺母实现上下运动。
A valve body is connected with a tower cover through soft seal, and pressed by a bracket through a bolt. The valve rod, the tower cover and a gland are pressed and sealed by filler.
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