单词	director valve
释义	director valve 主导活门
随便看	normal universe normal university normal unthreading normal uranium normal-uranium normal-uranium reactor normal uranium reactor normal use normal utility normal valence normal-valence oxide normal valency normal valley normal valtage normal valuation normal value normal values normal valve normal-valve normal valve position normal valve position (hydraulic) normal valve position (pneumatic) normal variability curve normal variable normal variance 泰山压卵泰山压顶泰山梁木泰山盘石泰山磐石泰山鸿毛泰来否往泰来否极泰极而否泰然处之八辈子八达岭八达杏八进制八阵图八难八零八八面光八面威风八面玲珑