[請益] 方螺紋為何機械效率比較高?
機件原理有提到方螺紋機械效率 大於梯形螺紋 大於三角螺紋
另外書上有提到 鋸齒型螺紋有方螺紋的效率 以及三角螺紋的強度
一直不是很了解
請問是什麼原因呢?
感謝~~
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