该铸件容易变形和产生表面缩凹、部缩孔。

The casting is easy to suffer from deformation, surface sink and internal shrinkage.

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一种差速器箱体，在内表面上具有多个隔开的凹部，用来在所述凹部内接收多个侧小齿轮。

A differential case has a plurality of spaced apart recesses on an internal surface for receiving a plurality of side pinions within the recesses.

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将凹部底面的颜色设定成比板表面(18)颜色的相对亮度低。

The color of the bottom surfaces of the recesses is set to brightness relatively lower than the brightness of the color of a board surface (18).

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