物理海洋学(physical oceanography)教科书中的动力高度(dynamic height)D被定义为 p2 z2 dp D gdz p1 z1式中p代表海水中的压强(pressure),ρ代表海水密度(density),g代表重力加速度(acceleratio...
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他没有给这两者给出一个定义,但是从他的案例可以清楚地看出,他指的是在企业内部劳动力高度分工的产业集群。
He does not provide a definition for either, but his examples make it clear that he meant a cluster with a deep inter-firm division of Labour.
在这个海拔高度猛烈的大风需要一个天星通过燃烧它的燃料提供动力保持飞船静止不动。
And at this altitude ferocious winds require a SkySat to burn through its fuel supply just to stay still.
当欧洲的黑夜降临的时候,Borschberg会漫漫让飞机下降到5千英尺的高度,事实上,就是在动力切换为电池供能前,将飞机当作滑翔机使用。
As darkness falls over Europe, Borschberg will slowly descend to about 5, 000 feet, essentially using the plane as a glider before reverting to battery power.
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