This then is something of a cursory view of the direction taken by contemporary quantum field theory. 这就是对现代电子场论的趋向的粗略的一瞥。
A comparison of Newton's gravitational laws and Maxwell's field laws will emphasize some of the characteristic features expressed by Maxwell's equations. 将牛顿的引力定律与麦克斯威尔的场论定理进行比较,便会发现麦克斯威尔公式中所表达一些特有性质的重要性。