偶极子在它的轴的方向上不发射能量.The dipole does not radiate energy in the direction of its axis.欲求的因子为图40那样的脉冲偶极子.The desired operator is the spike doublet of Figure 40.自然界中只能出现磁偶极子以及磁多极子的形式.Only magnetic dipole and higher multipole co...
当生活很艰难，你想要放弃的时候，请记住，生活充满了起起落落，如果没有低谷，那站在高处也失去了意义。When life gets hard and you want to give up, remember that life is full of ups and downs, and without the downs, the ups would mean nothing.你是什么样的人和你想成为什么样的之间的差距就是，你做了什么。T...
在职业拳击赛中，他从未被击倒判败过。He had never been knocked out in a professional fight.安迪转过身，大步走向克里斯，一拳把他击倒在地。Andy turned round, marched over to Chris and just laid him out.他34次击倒对手获胜。34 of his wins were KO's....