scall

If you are not washing your hair enough, greasiness can cuase a scalling problem which affects growth.

如果你不经常洗头发，油脂导致的结垢将影响头发的生长。

Slab temperature variation entering the mill would be closely controlled, and exposure to air and consequent scalling would be minimized.

由于板坯进入轧机后温度受到严格控制，暴露在空气中的部位极少，因而可将氧铁皮减少到最低程度。

Waste derived from human activitirs, such as rapeseed placentiform from the extraction of rape oil;fruit faeces from the extraction of fruit juice;chicken excrement from the scall farming of chickens.

摘要废弃物是人类为满足自身需要的产物，如菜籽饼来自于油菜籽取油，果渣来自于水果取汁，鸡粪来自于规模养鸡。