发布时间:2025-02-01 01:43:31
如果是长方形,用面积除以长度就等于宽度。
如果是平行四边形,则只能算出平行四边形的高度。因为平行四边形的面积和长度确定后,两邻边所夹的角不同,宽度也不同。
koyo 37r4332轴承koyo 37r4332轴承尺寸参数
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