中文字幕一区二区人妻电影,亚洲av无码一区二区乱子伦as ,亚洲精品无码永久在线观看,亚洲成aⅴ人片久青草影院按摩,亚洲黑人巨大videos

單詞 > 單詞
單詞大全 查英文單詞 英文單詞解釋
carat
美音: [?k?r?t] 英音: [?k?r?t]

第三人稱復(fù)數(shù):carats

carat基本解釋

名詞(寶石的重量單位)克拉; ,(金子)開(以純金為24開表示金含量的單位); =karat

carat詞典解釋

1. 克拉(鉆石等寶石的重量單位,合0.2克)
A carat is a unit for measuring the weight of diamonds and other precious stones. It is equal to 0.2 grams.

e.g. The gemstone is 28.6 millimetres high and weighs 139.43 carats.
這塊寶石高28.6毫米,重139.43克拉。
e.g. ...a huge eight-carat diamond.
重達8克拉的大鉆石

2. 開(表示黃金的純度,純金為24開)
Carat is used after a number to indicate how pure gold is. The purest gold is 24-carat gold.

e.g. ...a 14-carat gold fountain pen.
14開金鋼筆

carat英英釋義

noun

1. the unit of measurement for the proportion of gold in an alloy
18-karat gold is 75% gold
24-karat gold is pure gold

Synonym: karatkt

2. a unit of weight for precious stones = 200 mg