基本解释[机械工程]阀体盖螺钉英汉例句双语例句The hand wheel, the screw rod, the standby cap and the top sleeve are assembled and connected in a valve body.它是由在阀体内装配连接的手轮、螺杆、备帽、顶套及装于螺杆下的标准球和密封垫组合而成。ip.comvalve body cap screw更多例句专业释义机械工程阀体盖螺钉