目前通过应变增量计算残余应力的方法仍然是通过事先试验标定，测量超强或低强匹配焊缝中的残余应力时采用的仍然是母材的标定系数，因而会带来严重误差。
The great error could be produced in measuring the residual stress in a weld with the use of calibration coefficient for the base metal instead of the weld metal.
当加工条件比较严格时，请事先进行试验，经过反复验证后再加以使用。
When using for more stringent processing conditions, please test in advance, use after verifying repeatedly.
从自动化开始，使用小的试验项目，事先计划好，不要推迟或者委派，避免自动化现有的手动脚本，从UI测试中获取信任。
starting with automation – try a small sample project, plan upfront, don’t postpone or delegate, avoid automating existing manual scripts, gain trust with UI tests
试验采用纤维事先浸水搅拌的方法。
万一它不行怎么办？为了避免这种情况，公司通常要事先对生产过程进行分部试验。
What if it does' work? To avoid this situation, companies usually test parts of the process beforehand.
FDA是基于其两个随机对照临床试验的结果而认可这个药物的。病例数约为125例，患者至少事先接受过一项针对ITP的治疗。
FDA based its approval on two randomized clinical trials of about 125 patients who had received at least one prior ITP treatment.
为了研究试验设计的潜在影响，我们事先计划了特殊的分析法，将试验依可能影响治疗结果的设计面向加以分组。
To explore the potential impact of trial design, we pre-planned analyses that grouped trials by important aspects of their design that might influence the treatment effect.
（临床试验即被终止），而印度法规规定，没有事先得到印度药品管理局的批准，是严格禁止这样的患者参加临床试验的。
And India's rules prohibit testing on human subjects with such conditions without prior approval of the Drugs Controller General of India, LiveMint reports.
之后他们接受了一系列的4秒钟试验，每个实验都以一个“指导性”的字母暗示开始，受试者事先知道怎样解读这些字母。
They then were presented with a series of four-second trials, each beginning with the appearance of an "instructional" letter cue that the participants had been coached on how to interpret.
之后他们接受了一系列的4秒钟试验，每个实验都以一个“指导性”的字母暗示开始，受试者事先知道怎样解读这些字母。
They then were presented with a series of four-second trials, each beginning with the appearance of an "instructional" letter cue that the participants had been coached on how to interpret.
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