- 1. ball check valve spring: 球形单向阀弹簧
... ball check valve block；球形单向阀体 ball check valve spring；球形单向阀弹簧 ball cylinder；球形活塞缸 ...
dict.youdao.com - 2. spring ball check valve: 弹簧球式止回阀
dict.youdao.com - 3. spring ball check valve: 弹簧球式
dict.youdao.com - 4. check-valve ball spring: 止回阀球弹簧
dict.youdao.com - 5. check valve ball spring: 止回阀球弹簧
dict.youdao.com
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