smearing

1.The small boy spoilt the picture by smearing it with ink.

那孩子往画上抹墨水把画给毁了。

2.smearing the ethylene-dimethyl siloxanes on the metal copper plate surface reelingly, and drying 1-2 hours in air atmosphere 100-120deg.c.

把端乙烯基-聚二甲基氧烷旋到金属铜板表面，在空气的气氛中100-120℃干燥1-2小时。