提取比例
Mathematical relations between mercury withdrawal and trap effi-ciency, ratio of pore-throat volume are estimated.
建立了水银退出效率、捕集效率和孔-喉体积比三者间的数学联系;
Over 3 months after drug withdrawal, the ratio of all the above tongue pictures all tended to decrease, with an increase of pink tongue.
戒断期2个月以后上述所有舌象均有下降趋势,淡红舌比例升高。
As a result of the ratio of serve life to manufacture cost, the target of design plan of no tool withdrawal groove that gears are processed in gear-shaping is best than other plans, which it is a optimum one.
结果表明,当采用齿轮工作寿命与其加工成本、价格比为衡量指标时,通过人字齿轮刨齿加工实现的无退刀槽设计方案指标最高,成为最优方案。
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