Nitrocarburizing
气体碳氮共渗; 渗碳氮化
🗣️ 情景例句
Exploring outer space is a challenge to mankind.
探索外层空间是一项向人类发出的挑战。
Time does not bow to you,, you must bow to time.
必须抓紧时间。
The maximum weight allowance is 60 kilos per traveler, excluding hand luggage.
每个旅客托运的行李最大重量限额是60公斤，手提行李除外。