keystone ring的意思|示意

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keystone ring相关短语

1、 full keystone ring 全楔形环

2、 halfgauge keystone ring 半楔形环

3、 keystone-type piston ring 梯形活塞环

4、 keystone piston ring groove gauge 扭转环环槽量规

5、 keystone design ring groove 扭转环环槽

6、 Half Keystone Barrel Faced Ring 楔形桶面环

7、 Keystone And Taper Faced Ring 梯形锥面环

8、 Keystone And Barrel Faced Ring 桶面梯形环