oil float support 油浮筒

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

oil level gage float 量油尺浮子

oil field float 油田卡车拖挂的双轮平板拖车

float oil 浮油

oil pump float screen 油泵浮子滤网

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

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

float adjustment oil screen 浮子式滤油网