It assures casting quality; kerosene is less viscous than water thus will locate a casting defect more readily than other test fluids.
It assures casting quality; kerosene is less viscous than water thus will locate a casting defect more readily than other test fluids.
确保铸件质量。煤油的粘性比水小，因此比其他测试流体更容易定位铸件的缺陷位置。