“direct-acting valve”的概念、定义、翻译、参考文献-科学参考

单词	direct-acting valve
释义	direct-acting valve 直动阀
随便看	half-tide level half tide level half-timber half-timber building half-timbered half-timber house half-time half-time emitter half time emitter half-time shaft half-title half-tone half tone half(-)tone halftone halftone block half-tone block halftone characteristic half tone characteristic half-tone charge pattern half tone distortion half tone dot halftone dot half-tone dot reproduction halftone etching

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