短語詞組短語oil film viscosity 油膜粘度oil water viscosity ratio 油水粘度比oil water viscosity ration 油水粘度比oil soluble viscosity reducer 油溶性降粘劑oil fluid viscosity 含溶解氣石油的粘度oil mass viscosity 油的體積粘度coal oil mixture viscosity 煤油混合燃料粘度oil soluble viscosity reductant 油溶性降粘劑 返回 oil viscosity