nigrescence是什么意思
2024-01-26 16:07:17
nigrescence
n. 变黑；发黑
形容词：nigrescent
例句
- "People can feel nigrescence but its not obvious. “能感到变黑的感觉，但不是很明显。
- What to do if the silvered jewelry become nigrescence(black color)? 银饰发黑怎么办？
- But the sky sudden nigrescence, has combined at least 30 minutes rainstorms. 但天空突然变黑了，并下了至少30分钟的暴雨。
- When Dao is baked,it is nigrescence at first,and then blanched.But this diferent from wrapped steel. 烧刃线磨时先是发黑，继续磨后发白，但白得和夹钢的发亮不同。
- 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。
- 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。