Results show that the effect of charge weight variation on the muzzle velocity probable error is not significant when the variation is within normal range.

结果表明，装药量在其正常范围内波动时，装药量的变化对初速或然误差的影响并不显著。

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Weight gain is determined by more than diet, which is why there is such a wide variation in normal patterns of infant weight gain.

体重增长不仅仅是由饮食决定的，这就是为什么正常模式下婴儿体重增长也有如此大的一个差异的原因。

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The difference was equivalent to the average variation in cognitive scores between children born at a normal gestational weight and those weighing less than 3.5 pounds, the researchers said.

WSJ: Exercise in Short Bursts Is Effective