before and after comparison的意思|示意
前后比较
before and after comparison的网络常见释义
前后对比 在后评估中，“前后对比”(Before and After comparison)是指将项目前期阶段的可行性研究和经济评估的预测结论与项目的实际运行结果相比较，以发现变化分析原因，常用于揭示项目的计划、...
前后对比法 前后对比法 （ Before and after comparison ）是指将法律法规制定实施前的情况和实施后的情况进行对比，以确定法律法规产生的作用。
before and after comparison相关短语
1、 comparison before and after renovation 改造前后对比
before and after comparison相关例句
Objective To evaluate the therapeutic effects of thyroplasty on cases with falsetto through a comparison of EGG parameters before and after operation.
目的比较分析手术前后电声门图参数变化，评价甲状软骨成形术治疗男声女调的疗效。
The comparison of dynamic parameters and the data before governance tested the grouting effect of debris slope after governance.
根据得到的动力学参数与治理前的数据比较，检验治理后碎石土边坡灌浆效果。
The working process of resin bed and working principle of acid purification unit and flowchart are described particularly. Making comparison of acid consumption of using it before and after.
详细介绍了树脂床工作过程和酸净化装置的工作原理及工艺流程，对酸净化装置投入前后的酸耗量做了对比。
The comparison of carotid IMT and area and volume of plaque was statistically significant before and after the treatment(all P<0.01).
治疗前后颈总动脉IMT、斑块面积、体积差值的比较也有显著统计学意义（P均<0.01）。
It can be used for comparing two same type size of date or before and after, the result of the comparison is a logical value.
它的作用是比较两个相同类型数据的大小或前后，其运算结果是逻辑型数据。
The second step: smelling The first breath of fresh air, and then probe into the nose cup smell its fragrance, gently shaking the glass, then smell, smell the difference before and after comparison.
先呼吸一口新鲜空气，再把鼻子探入杯中闻它的香味，轻轻摇晃酒杯，再闻，对比前后的香味有何不同。