2389| 15
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鍵槽上的正負公差選擇? |
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點評
-0.2
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點評
寬度公差選負,,目的則是讓平鍵與鍵槽緊密裝配,,確保平鍵完全卡住,,防止左右移動 ,。深度公差為正,,目的就是讓平鍵能相對容易完全嵌入鍵槽。
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