Rocklinizing
罗克林碳化钨表面硬化法
🗣️ 情景例句
Please excuse me for a minute.
失陪一会儿。
Strong coffee often has a bitter taste.
浓咖啡通常有苦味道。
The development of such a telescope will be one of the great astronomical projects of the twenty-first century.
而开发这样一台望远镜将会是21世纪天文学的一个重要的研究课题。