产品放置于自然环境中，60日后与氧分子结合又自动转化成清水，不会造成二次污染。
When exposed to the air for more than 60 days, the product will turn into water with oxygen molecules and there will be no secondary pollution.
一名美籍伊朗裔知识分子塔吉·巴克斯两年内第二次在德黑兰被捕。
An Iranian American academic Kian Tajbakhsh has been arrested in Teheran for the second time in two years.
研究了银膜表面由于吸附吡啶分子而引起的表面二次谐波信号变化。
The changes in the SH signal due to adsorption of pyridine molecules on the Ag film were investigated.
试验结果表明：高分子湿度传感器输出信号符合二次拟合曲线变化规律。
Experiment result shows that output signal of this macromolecule humidity sensor accords with variational rule of secondary polynomial fitting.
试验结果表明，腐殖酸钠的多基团大分子附着在硅酸二钙分子的表面上，使其不与溶液接触而避免二次反应的发生；
The results showed that the big molecules of humic acid sodium enwrapped dicalcium silicate surface , which prevented dicalcium silicate from contacting with the solution.
为了更准确地描述树高与直径的关系，文章综合分析了广泛应用于林窗模型中的四个数学方程，即二次曲线、幂函数方程、理查德方程和单分子方程。
Parabolic curve function, power function, Richards equation and single molecular equation, related tree height to diameter at breast height and widely used in forest gap model, were analysed.
选择影响指标的主要工艺参数作为决策变量，以产品理想分子量分布为目标，采用序贯二次规划(SQP)算法对缩聚生产过程进行优化控制。
Selecting main operating parameters as decision variables and desired WMD as control goal, polycondensation production process is controlled by sequential quadratic programming (SQP) algorithm.
微生物絮凝剂为天然生物大分子，是一类具有絮凝功能、高效、安全、无二次污染及具生物降解性的生物多聚物。
Microbial flocculants are natural biological macromolecules and biopolymers with flocculating function, high efficiency, safe, biodegradation, without environmental pollution.
为了能够获得较好的处理效果，冬季运行时高级分子分解水处理工艺采用二次分解二次反应沉淀。
Secondary decomposition and secondary sedimentation should be adopted in AMT system for insuring removal efficiency in winter.
为了能够获得较好的处理效果，冬季运行时高级分子分解水处理工艺采用二次分解二次反应沉淀。
Secondary decomposition and secondary sedimentation should be adopted in AMT system for insuring removal efficiency in winter.
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