float oil layer sampler 浮油层采样器 ; 浮油层取样器

Oil Float 机油浮筒

oil float support 油浮筒

oil level gage float 量油尺浮子

float switch for oil surface 油面浮动开关 ; 油面浮开关

oil field float 油田卡车拖挂的双轮平板拖车

float adjustment oil screen 浮子式滤油网

oil pump float screen 油泵浮子滤网

automatic oil-return float valve 自动回油浮子阀