Surfaces to be welded or thermally cut shall be cleaned of all foreign material such as grease, oil, dirt, scale, slag and paint that would be detrimental to either the weld or base material.
需焊接或热切割的表面应排除所有可能会损坏焊材或母材的杂物，如脂、油、灰尘、水垢、熔渣和油漆等。
2
Line the base of the dish with greaseproof paper and lightly grease the sides.
在餐盘底部垫一层防油纸，再在里侧涂少许的油。
3
To find that mixture of naphthenic mineral oil and ester oil as base oil, the grease has a proper noise character.