Compressive failure tests were carried out on composite laminates and stitched laminates after low velocity impact to study compressive failure mechanisms of laminates after low velocity impact.

对缝纫层合板和无缝纫层合板进行低速冲击后压缩破坏实验，以研究低速冲击后层合板的压缩破坏机理。

youdao

After dozens of years of laboratory study and pilot test, 5 ASP flooding pilot tests have been successfully performed in Daqing Oil Field.

经过多年的室内研究及矿场试验攻关，大庆油田已先后成功地进行了5个三元复合驱矿场试验。

youdao

The study has some limits. For instance, participants didn't take the mental skills tests at the study's start for before-and-after comparisons.

该研究有一定缺陷。例如，参与者在研究开始时没有进行心智技能测试，无法进行前后对比。

youdao

Subjects took two walking tests before and after the study, which assessed distance covered in six minutes and gait speed, respectively.

WSJ: A Virtual Coach Spurs Patients