free of any oil,grease and scale and scratch depth shall not

We once thought of water and air as free.They're not,not any grease and grime there's a scale here,and it's not a matter of being complete Oil and water do not mix. water and oil don not mix and shall not affect the interpretation of the respective ar Against scale and 英语翻译warning1.ensure valve and gasket isand free of any sand 英语翻译The scale,content and structure of WorldSkills competiti 我在工程图纸上看到两句话:1）Parts shall be free of shart edges and flash free and 【翻译,词组,语法】And speaking of freedom is not the author free,as