The extractive rate of lead from tea is interrelated with brewing temperature and brewing time, negatively interrelated with proportion of tea to water ratio.
茶叶中铅浸出率与冲泡温度和冲泡时间均呈正相关关系，与冲泡茶水比呈负相关关系。
Effects of temperature, mass ratio of toluene ton-hexane especially additive on extractive capability of sulfolane before and after partial degradation were investigated.
采用气相色谱法测定环丁砜对甲苯的抽提能力，通过改变温度、甲苯与正己烷的质量比等实验条件，研究了添加剂对环丁砜劣化前后甲苯抽提能力的影响。
The extractive is diluted by the alkane-cycloparaffin solvent with weight ratio 1: (0.1-0.5).
所述提取物用链烷-环烷溶剂 以溶剂对提取物为（0.1～0.5）∶1的重量比预先进行稀释。
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