before-and-after

Eight alloys were measured before and after tarnish by chromometer.

探讨低贵合金变色的影响因素。

Before and after 30 years, Baoding have Tori Aristo at the box office.

30年代前后，保定有东篱雅集票房。

Methods Symptoms, signs, liver function of the cases before and after ascites superfilter concentration and reinfusion treatment were compared.

方法腹水超滤治疗仪治疗,比较治疗前后者症状、体征、肝功能的变化。

The resulting threshold masker levels were LB1060 and LA1060 for the probe presented before and after the end of the masker, respectively.

当探测音出现在遮蔽者产生之前，其遮蔽门槛为 LB1060 ；当探测音出现在遮蔽者产生之后，其遮蔽门槛为 LA1060 。

CT findings of gallbladder before and after oral telepaque in 40 cases were analyzed retrospectively.All the cases were confirmed by surgery and pathology.

本文收集40经手术病理证实的CT平扫及口服碘番酸胆囊造影CT资料完整的病，进行回顾性分析。

Method Applying hemodilution autotransfusion and homogenic transfusion in two experimental groups respectively to observe the blood routine tests and cytokines before and after operation.

方法分组应自身输血和同种输血,对比术前及术后的血常规和细胞因子。

Methods Collect the urne from 13 patients with vulval cancer before and after treatment respectively, do the urine routine test and compare the results.

分别作了13外者治疗前后的小便常规检查，并比较它们的结果。

The respirometric activities of sludge before and after tame have been determined by the BOD Track, and the activity could be expressed by first slope of respirometric curve.

BOD测定仪连续测定了驯化前后污泥耗氧曲线,第一段斜率表征污泥呼吸活性。并通过电镜观察驯化过程生物相的状况。

Methods Serum thyroid hormone levels were measured by using chemoluminescence technique in 32 adults epileptic patients before and after treatment with TPM and compared with 40 heathy people.

方法化学发光分析法测定成年癫痫组者（32）TPM治疗前、后的血清甲状腺激素水平，并与健康对照组（40人）进行比较。

By comparing the trading volume, price, variance of return and beta of the underlying stocks before and after the warrants issue, the research analyzes the microeffect of the warrants issue event.

本文分别从权证发行前后标的股票的价格、成交量、收益率方差以及贝塔值的变化情况，分析了权证发行的微观效应。

A comparison of their spermous qualities both before and after the ligations had been made in the 35 cases of such patients hospitalized and treated in our hospital in the last three years.

对近三年我院诊治精索静脉曲张症不育者35,术前、术后精液质量进行比较。