你能帮帮他们吗
命题是谓词的一个特殊情况?"n元谓词就是有n个客体变元的命题函数,当n=0时,称为0元谓词,它本身就是一个命题,故命题是
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英语改错 Most of them were those what i had been expecting for l
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能否有高手解释下这英文:Use thermal relief pads on Plated through Holes
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英语翻译But I don't know why I still can not forget him.In fact,
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