During the starting process, due to the injection mould machine demoulding, carbonizing materials mixed into the injection materials of white base to form the blackspot in the picture.
在开机过程中，由于注塑件的脱模，碳化的物料混入白底座的注塑料内，造成了照片中的黑点。
During the starting process, due to the injection mould machine demoulding, carbonizing materials mixed into the injection materials of white base to form the blackspot in the picture.
在开机过程中，由于注塑件的脱模，碳化的物料混入白底座的注塑料内，造成了照片中的黑点。
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