Available Pb may unify the critical concentration of Pb in various soils.

用有效态铅为指标有可能使不同土壤铅临界浓度比较接近一致。

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At the late period of growth of colloidal particles, the concentration of donor atoms can be approximately represented by the critical concentration of impurity.

在胶粒生长后期，施主原子浓度可以近似地用杂质临界浓度表示。

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At the critical concentration, the discharge frequencies of electric pulse in low feeding individuals were significantly higher than that in high feeding individuals.

在临界浓度下，低摄食性个体的放电脉冲频率显著高于高摄食性个体。

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Professional writers, for whom concentration is critical, are often derailed by the double-edged sword of the Internet: they use it to find material, but they often go off on search sidetracks that interrupt their creative process.

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There will be a self-ignition of the UDMH and if it does not all burn up, it will be so dispersed there will not be a critical concentration.

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