研究了环状活塞声源辐射声场的特性。
所述凸台全部置于所述活塞头右端的环状槽内。
The lug boss is completely arranged in an annular groove at the right end of the piston head.
在各离合器机构的离合器滚筒的内部中的从动板与活塞之间分别设有环状的母蝶形弹簧以及子蝶形弹簧。
A driven plate and a cylinder are inside the clutch drum of each clutch mechanism, and ring-shaped primary and secondary springs are placed between the driven plate and the cylinder.
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