3075| 8
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請教:“不柱度”怎么測量? |
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點(diǎn)評
好像,但沒找到權(quán)威出處,,
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點(diǎn)評
確定
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點(diǎn)評
好像是老標(biāo)準(zhǔn),,現(xiàn)在是圓柱度,,
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