英语词汇“hand screw”的翻译、意思、用法、释义-英汉汉英双解词典

词汇	hand screw
释义	hand screw短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 n.手动起重器 The stem applies rising- stem type, which has left hand screw. When the stem nut is rotated, the opening scale of the valve can be directly viewed. 无滞留凹腔，阀杆为明杆左旋螺纹，随着外部阀杆螺母的旋转可直观阀门开启程度； szydfm.com
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