We have a weight on the piston, and that weight is chosen so that p2 it acts as though p external is equal to p2.

让活塞上放一重物，让它的效果刚好,等同于外压强。

youdao

Results They had a facilitation on body weight, brain weight, cerebral cortex thickness and forage transportation rate. There was a significant difference compared with the control group (P<001);

结果：生脉饮及其成分对小鼠体重、脑重、大脑皮层厚度及饲料转化率有促进作用，与对照组比较有显著差异（P <0 0 1） ；

youdao

Methods Compare the radiographic operation method, the image and the film success ratio of the original P-A Merchant view with those of the standing weight-bearing Merchant view.

方法通过对常规俯卧后前髌骨轴位和站立负重髌骨轴位的投照方法得出的影像及照片成功率加以对比。

youdao

We have a weight on the piston, and that weight is chosen so that p2 it acts as though p external is equal to p2.

让活塞上放一重物，让它的效果刚好,等同于外压强。

麻省理工公开课 - 热力学与动力学课程节选

At Smiley's, you get a 750hp dirt dragster that has about the highest power-to-weight ratio of anything this side of a fighter jet (see box, p. 153).

FORBES: Real men eat dirt