外来物质混于塑胶原料或烤漆中所产生的缺点，杂质通常为黑色或棕色。

外来物质混于塑胶原料或烤漆中所产生的缺点，杂质通常为黑色或棕色。

Results (English) 1:

Mixed foreign substances in plastic material or disadvantages arising out of paint, usually black or brown impurities.

Results (English) 2:

Foreign substances mixed in plastic materials or paint disadvantage arising from impurities usually black or brown.

Results (English) 3:

Foreign substances produced in the mixed plastic material or paint the defects, impurities is usually black or brown.