foreign material

基本解释

Inclusion. Foreign material or non-metallic particles entrapped within the metal during solidification.
夹杂物。金属凝固过程中残留在其内部的杂质或非金属颗粒。
We draw a conclusion from the paper: mixing of foreign material becomes one factor of production quality.
异物混入成为影响产品质量的重要因素之一。
Surfaces to be welded or thermally cut shall be cleaned of all foreign material such as grease, oil, dirt, scale, slag and paint that would be detrimental to either the weld or base material.
需焊接或热切割的表面应排除所有可能会损坏焊材或母材的杂物，如脂、油、灰尘、水垢、熔渣和油漆等。

Most importantly, when the drug-treated mice were later presented with other types of foreign material their immune systems responded rapidly.
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By the time Samantha finished dressing, the tab had started to dissolve, and a few strands of foreign genetic material had entered the cells of her nasal mucosa.
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Because while a stronger yuan increases the dollar price of Chinese goods, it also lowers the yuan price of foreign raw material, allowing Chinese manufacturers to keep a lid on the price of their finished goods.
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