The married women of Shitamachi maintained the custom of blackening their teeth.
下町的已婚妇女保留了染黑牙齿的习俗。
He is always blackening others' character by insinuation.
他总是含沙射影地贬低别人的人格。
A test of lower middle temperature blackening on steel part was introduced.
介绍了钢铁件低中温发黑工艺试验。
A kind of the steel blackening agent performance satisfactorily was developed.
研制了一种性能优良的钢铁常温发黑处理剂。
It could be applied to blackening treatment for iron and steel or cast iron surface.
适用于铸铁及钢铁表面的发黑处理。
Quite significantly, there was no blackening of the emulsion at the mirror's surface .
十分引人注意地，在反射镜表面的乳胶没有变黑。
Quite significantly, there was no blackening of the emulsion at the mirror's surface .
十分引人注意地，在反射镜表面的乳胶没有变黑。
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