Macrofractography
断口低倍检验, 断口宏观检验
🗣️ 情景例句
I had a nice evening.
让我过了一个愉快的夜晚。
The day is short but the work is much.
工作多，光阴迫。
It is not long before they are so accustomed to swimming that they can pick up weights from the floor of the pool.
他们很快便适应了游泳，以致能捡起池底的物品。