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汉语拼音：nóng dù

一定量溶液中所含溶质的量，通常用所含溶质质量占全部溶液质量的百分比来表示。

1. 单位溶液中所含溶质的量叫做该溶液的浓度。溶质含量越多，浓度越大。浓度可以用一定的溶液中溶质的克数、克分子数或克当量数计算。一般用单位溶液所含溶质的重量的百分比来表示。

2. 程度。

   朱光潜 《文艺心理学》第五章一：“我们对于一种艺术品或是一幅自然风景，欣赏的浓度愈大，就愈不觉得自己在欣赏它。”

• The solubility and release is compared with that of other equal concentration fertilizers produced at home and abroad.

  测试并对比国内外同等浓度肥料的溶解释放。

• PW membrane method has been used for treating this kind of wastewater, so as to solve the problem of pollution control.

  采用PW膜法处理高浓度制药发酵废水，解决了污染问题。

• Then, by the relationship between the heat conductivity and the impurity concentration, the concentration distribution can be obtained.

  进而可以据热导率和掺杂浓度的关系，得到半导体中掺杂浓度的分布。

• At a given temperature , the rate of a reaction varies directly as the product of the concentrations of the reactants in the slowest step.

  在某一给定的温度下，反应速率取决于最慢的那个反应步骤中的反应物浓度。

• At the same culture time, the content of cadmium in cultured shrimp in inorganic cadmium group was more than organic cadmium group.

  同一养殖时间内无机镉饲料组养殖对虾对镉的蓄积量要大于相应浓度的有机镉饲料组。

• Two internal glands at the bottom of their tails produce a thick and oily liquid made of particularly smelly chemical compounds.

  它们尾巴根部的两个内腺会产生一种浓度高的油性液体，含有浓重臭味的化合物。

• So if you were to sketch it out as a function of time, eventually you'll get to the concentration A equilibrium.

  那么如果你把它作为时间的函数画出来，最终你会达到浓度A平衡。

• It was not realized at the time that only injected ascorbate might deliver the concentrations needed to see an anti-tumor effect.

  当时没有意识到仅仅注射给药可以输入需要的浓度看到抗癌效果。

• The Lei Seca (Dry Law) makes it a criminal offence to drive with a blood-alcohol concentration of 6 decigrams per litre or higher.

  LeiSeca（禁酒法）将驾驶时血液酒精浓度每升6分克或更高定为刑事犯罪。