Its upper limit is determined by the conditions in the ionosphere.其上限由电离层的状态而决定.The ionosphere is a complex medium, which is aeolotropy, asymmetry, dispersive and changes randomly with time.电离层是随机时变, 各向异性, 非均匀 、 色散的复杂介质....
The ionosphere is that region of space contatining electrically charged species.电离层是指含有带电物质的空间区域.Its upper limit is determined by the conditions in the ionosphere.其上限由电离层的状态而决定.Rockets and artificial satellites can go fa...
这两者之间有本质的区别.There are essential differences between the two.她确实有直入问题本质的能力。What she does possess is the ability to get straight to the core of a problem.但是, 对财产差别的这种政治上的承认, 决不是本质的东西.This political recognition of property ...