无穷级数的收敛性与发散性与此概念有关.Convergence and divergence of infinite series depend upon this concept.我们用一块负透镜,它将使光线发散一些.We introduce a negative lens which will diverge the rays a bit.高辐射功率的光束会有高的发散度.A beam of high radiant power wil...
…a small tributary river.一条小支流a tributary state附属国...the Napo river, a tributary of the Amazon.纳波河，亚马孙河的一条支流Several rivers are tributary to the Ganges.有好几条河都是恒河的支流.a tributary river支流Fishermen in the Hafar Canal , a shal...