Nitempering
气体软氮化; 氮回火
🗣️ 情景例句
And my phone number is 797-7963.
我的电话是797-7963。
Mere words will not fill a bushel.
空言无补。
Shortly after this the famous H. M. S. Challenger expedition established the study of the sea-floor as a subject worthy of the most qualified physicists and geologists.
此后不久，英国著名的“挑战者”号舰艇对海底的那次考察，把对海床的研究确立为一个值得一流物理学家和地质学家从事的研究课题。