Sartre's theoryof human relations has changed from theoryof conflict to theoryofreciprocity.
萨特的人际关系理论经历了从“冲突论”到“互惠论”的转变。
2
According to the reciprocitytheory, the reciprocal altruistic behavior refers to the behavior of two organisms which exchange fitness costs and benefits.
互惠理论指出,互惠利他行为是指两个有机体之间相互交换适合度代价和利益的行为。
3
On applying the diffraction theory and with the aid of the reciprocity theorem, an approximate formula for the radiation field of a slot cut in a metal sheet of finite size is derived.