这句话的意思是,如果当初采用了一种更好的材料,这部分的强度早就.了
这是一种假设,假设发生了这种情况,实际上没有发生.对于说话人来说,他是在表达一种抱怨的语气.
比如：If I were you,I would have killed him.
意思是：如果我是你,我当初就把他杀掉了.这是在表达一种假设,假设有了另外一个前提,会发生什么后果.
英语翻译If a better material had been used,the strength of the p
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