1) drum selector valve
卷筒(形)选择器阀
2) drum selector valve protection relief valve pressure test
卷筒(形)选择器阀防护安全阀压力试验
3) drum selector switch
卷筒(形)选择器开关
4) l-s mode selector valve
喇叭形选择器阀
5) selector valve
选择器阀
6) l-mode power selector valve
l-形功率选择器阀
参考词条