Synchronizer gear hub is made of PM, with more complex shapes and different thickness section.

同步器齿毂的材料为粉末冶金，形状比较复杂，而且截面的厚度不一样。

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Synchronizer gear hub is made of PM, with more complex shapes and different thickness section.

同步器齿毂的材料为粉末冶金，形状比较复杂，而且截面的厚度不一样。

youdao