... 浮渣导管 scum pipe 顶端浮渣 top scum 清除浮渣 descumming ; descumming,descumming ...
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top scum
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以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Floating on top of the greenish pool - a mixture of 70% water from the Dead Sea and 30% water from the Red Sea - is a white scum of algae.
绿色的池面(由70%的死海水和30%的红海水混合而成)上，漂浮着一团白色的藻类。
The circular movement of the cooking foods also meant that scum or skin formed neatly in the center, making it easier to skim the residue off the top.
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