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技術的応用
μmとumは同じ単位ですか（両者の違いは何ですか）
Mar 12, 2026
—
by
hfc87
in
working (of machinery)
μm と um は同じ単位ですか (両者の違いは何ですか) 1. um の u は実際にはギリシャ文字のμで、…
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