发黑

Cassie found it necessary to explain her blackened eye.

凯茜发现有必要解释一下她发黑的眼睛。

She looked old and thin with sunken cheeks and hollow eyes.

她看上去又老又瘦, 脸颊凹陷, 眼圈发黑。

In addition, non-coated paper in high-humidity environment of sulfide, chemical pulp and fill applicatron dottle out acid melted, making of gold and silver monlchamus nigrescent who lose their luster.

此外，否涂料纸在矮湿度的境况下，化学纸浆的硫化物以料洋的磕酸矾土感化，也会纸背上的金、银不朱发黑而华度。

He landed catfooted on the blackened streak—still hot enough to scorch his boots—that his landing had gouged into the deck.

他轻轻落到大片由迫降带摩擦出的发黑的焦痕上，其温度之高仍然足以烫焦他的靴子。

With regards to the surface treatment, our crafts include nigrescence, phosphorization, zinc plating, dacromet, nickel plating and copper plating.

表面处理有发黑、磷化、机械镀锌、达克罗、镀镍、镀铜等工艺。