constant co-precipitation 稳态共沉淀法
When the operating time is constant, the plastic film cover of precipitation is decided by the rainfall duration and daily evaporation.
当操作时间一定时，塑苫的降水量由降水持续时间和日蒸发量决定。
Methods The titration operating conditions were optimized and the solubility product constant of phenytoin silver precipitation was determined.
方法测定了苯妥英银凝胶的溶度积常数，研究了滴定的最优条件。
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