Studies show that a disproportionately large number of the scientists who produce highly creative work beyond the age of forty entered their field at an older age than is usual.
研究表明,完成高度创造性事业且年龄超过40岁的科学家中,有相当多的人进入该领域的年龄比一般人要大。
Field studies show that these simple steps could prevent at least two-thirds of deaths in newborns each year.
现场研究表明,这些简单的步骤,可以防止每年至少有三分之二的新生儿死亡。
OK, so that's the general method of calculation, but we've seen a shortcut for work when we can show that the field is the gradient of potential.
这就是计算的一般方法,但求功的时候,如果向量场是某个势的梯度,是有捷径可走的。
应用推荐