他精通机械，了解许多有关声音的知识。He was a very mechanical person, who knew a lot about sound.男孩和女孩会喜欢摆弄各种机械装置。Boys and girls will enjoy messing about with any kind of machine.在报关单上，寄货人将货物列为农用机械。On the customs declaration, the sender la...
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...
The officers had run the risk of being dismissed.这些警官冒了被开除的风险。Harry dismissed his old friend's speech as "a nine-day wonder"哈里对老朋友的讲话不屑一顾，称之“火不了多久”。I initially dismissed the idea out of hand.我起初不假思索地就否定了这个想法。...