The presence of impurities can affect the melting point of a substance.
杂质的存在会影响物质的熔点。
The chemist carefully purified the sample to remove any impurities.
化学家仔细地纯化了样本以去除任何杂质。
The water supply was contaminated with impurities from industrial waste.
水源被工业废物中的杂质污染了。
The purity of gold is measured in karats, with 24-karat being free from impurities.
金的纯度用克拉来衡量，24克拉的金是无杂质的。
Impurities in the fuel can cause engine damage over time.
燃料中的杂质会随着时间的推移导致发动机损坏。
The scientist is studying the effect of impurities on the conductivity of semiconductors.
这位科学家正在研究杂质对半导体导电性的影响。
The process of distillation helps to separate pure substances from their impurities.
蒸馏过程有助于将纯净物质与其杂质分离。
The presence of impurities in the raw materials led to inconsistent product quality.
原材料中含有杂质导致产品质量不一致。
The diamond's value decreases with an increase in impurities or inclusions.
钻石的价值会随着杂质或内含物的增加而降低。
The filtration system removes impurities from the air in the factory.
过滤系统能去除工厂空气中的杂质。
"For instance, the Simandou iron ore project (in Guinea), which involves Chinese companies and Rio Tinto, produces 65.5 percent grade iron ore, and has relatively low alumina and silica impurity levels, helping boost the steel industry's efforts to reduce carbon emissions," Zhu said.
朱说：“例如，中国公司和力拓集团参与的西芒杜铁矿石项目（几内亚）生产了65.5%的铁矿石，氧化铝和二氧化硅杂质水平相对较低，有助于推动钢铁行业减少碳排放。”。
未经许可，严禁转发。QQ交流群：688169419