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汤姆不像他哥哥那样擅长运动 » Tom doesn't like his brother is good at sport 浓度偏低 » low concentration 你的语法都错了好吧？什么叫许多方法，你知道我在问你什么吗？
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low concentration mine gas 低浓度瓦斯
undetectably low concentration 探测不出的低浓度
low concentration ratio mirror 低倍率反射镜
low concentration of peroxyacetic acid 低浓度过氧乙酸
low concentration ratio system 低倍率聚光系统
low concentration gas 低浓度瓦斯
双语例句原声例句权威例句
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Titanium is useful at low concentration only.
钛只在低浓度时起作用。
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In some cases, even a low concentration of green tea was effective.
在某些例子中，即便是低浓度的绿茶都有效果。
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It works at a very low concentration-10 parts per billion-so you can't smell the compound.
这种物质在极低浓度下(10ppb)就可以发挥作用，因此，你是闻不到这种物质的。
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They move from regions of high concentration to regions of low concentration by this natural flow down a concentration gradient.
从高浓度区域,向低浓度区域流动,顺浓度梯度流动
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