4182| 16
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請(qǐng)教 這種槽如何加工 |
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點(diǎn)評(píng)
斜邊8.5,,銳角10度,剩下的不都出來了嗎,?,?三角函數(shù)或是CAD繪圖基礎(chǔ)的內(nèi)容
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