nigrescence

nigrescence

美 　英

• n.变黑；(颜色；皮肤；眼睛等的)发黑
• 网络表面发黑；黑化

英汉解释

n.	1. 变黑;(颜色;皮肤;眼睛等的)发黑

英英解释

n.	1. the process of becoming black or dark

例句

But the sky sudden nigrescence , has combined at least 30 minutes rain storms.

但天空突然变黑了，并下了至少30分钟的暴雨。

First, strengthens against exposes to the sun, against exposes to the sun can complete can prevent the cheek nigrescence .

第一、加强防晒，防晒做得好就能预防脸蛋变黑。

People can feel nigrescence but it's not obvious.

能感到变黑的感觉，但不是很明显。

Because smokes can cause the skin cell to be at the anoxic condition, thus causes the eye socket nigrescence ;

因为吸烟会使皮肤细胞处于缺氧状态，从而使眼圈变黑；

The cause of color and luster nigrescence about cooking with soy sauce

酱油烧菜色泽发黑原因剖析

Excellent thermal stability, no nigrescence under the high temperature to ensure good surface finish;

热稳定性能优异，在高温下不发黑发黄，保证铸件的表面光洁度；

Study on the technique of steel normal-temperature quick nigrescence

钢铁常温快速发黑技术的研究

Study on Nigrescence Technics for Axes Shelves

轴档发黑工艺的研究