建立了一个点源排出的活性污染物以及其在大气中化学转化形成的次生物扩散方程。
The sets of diffusion equations are presented for reactive pollutant from a time -varied point source and secondary pollutant formed by the transformation.
原油的蔓延扩散超过了165平方英里，对海洋生物和水质造成了严重威胁。
The spill spread over 165 square miles and posed a serious threat to both sea life and water quality.
托马斯（Gerry Thomas）指出，切尔诺贝利核扩散可能增加儿童甲状腺癌症发生率的风险性预测，唯一能得到生物学效应证明的只是那些当时直接暴露在核辐射下的儿童。
The only proven biological effect of radiation at Chernobyl was an increase in thyroid cancer among those who were children at the time of exposure.
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