Macrofractography
断口低倍检验, 断口宏观检验
🗣️ 情景例句
I know.
我知道。
I hope you bring his quitar with him.
我希望你带他的吉他一起来。
Ever since, people have had difficulty in deciding whether the craft should be ranged among ships,
自那以后，人们很难决定是否应该将这种运载工具列为轮船、