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“重徑比”這個(gè)名詞是如何定義的 |
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點(diǎn)評(píng)
看過GB/T9239,,還是沒理解“重徑比”在平衡中指的是什么
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點(diǎn)評(píng)
看單位Kgm是重徑積。納悶這樣的文章怎樣發(fā)表的,。
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