搜索 - 科创

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哦，a++的返回值是a，执行后a将会增加1，++a的返回值是a+1，执行后a同样会增加1。新手理解到这就没问题了，我对这种东西也是理解到这种程度的。

你说那种不锈钢的薄管子（做防盗窗什么的装修管）可不行，那种管子并非无缝管，只是由板材卷制的装饰管（内部可见焊缝），耐压能力极差。并不适合做发动机，目前个人推荐的是6061-T6铝管。

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