Wherein the screw comprises a screw head, a lug boss and a screw rod.
该螺丝包括一螺头、一凸台及一螺杆。
The lug boss is completely arranged in an annular groove at the right end of the piston head.
所述凸台全部置于所述活塞头右端的环状槽内。
The side of the lock-up set is provided with a semicircle lug boss, which is allocated with the semicircle groove arranged on the shell.
锁止套周侧设置半圆凸台，半圆凸台与设置在壳体上的半圆凹槽相配置。
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