top guide meaning in Chinese
导头帽
前导承
上卫板
Examples
- Series 415 steam safety valves feature a stainless steel spring , a top guided stem and non - stick teflon ? disc to metal seating to assure positive shutoff
系列415蒸汽安全阀配置不锈钢弹簧，一个顶部引导阀杆和不卡住特氟隆阀瓣对金属阀座密封，确保绝对关闭。