Through the optimization of shape and dimension for the blank material, the head is prone to shape and the wall thickness is uniform.

通过优化坯料形状和尺寸，使封头易于成形且壁厚均匀。

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Aluminum motorcycle left-cover has the features of uniform wall-thickness and large profile dimension.

摩托车铝合金左盖压铸件，壁厚比较均匀。

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