... double valve replacement 释义：双瓣膜置换术 valve hook 释义：瓣膜钩 valvular regurgitation 释义：瓣膜反流,瓣膜性回流 ...
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hook control valve 吊钩控制阀
hook motor control valve spool 吊钩马达控制阀滑阀
hook winch relief valve 吊钩铰盘安全阀
hook winch control valve 吊钩铰盘控制阀
boom and hook control valve 吊杆和吊钩控制阀
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