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。

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Results The difference in the incidence of feeding intolerance between newborns with different birth weight were statistically significant (P< 0.01).

结果不同出生体重新生儿喂养不耐受发生率不同，差异有统计学意义（P<0.01）。

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Results There was no significant difference between the two groups of height, weight and head circumference(P>0.05).

结果两组婴儿的身高、体重、头围评价差异无显著性，P>0.05。

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The manual shows that GSK's net profit margin is in the same range as that of General Electric, Coca-Cola and Weight Watchers (see story, p. 86).

FORBES: Spin Doctors

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