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...
Our militia fired off volley after volley from antiaircraft artillery.我民兵的高射炮连续射击.The antiaircraft guns opened up.高射炮开始射击.The antiaircraft guns shot down three enemy planes.高射炮击落了三架敌机....
Dual x - ray absorptiometry was used to measure bone mineral density.双能 X 线骨密度仪被用来股的矿物质密度.Methods: Body composition was measured with dual energy X ray absorptiometry ( DXA ).方法: 采用双能X线吸收测量法 ( dual-energyX -rayabsorptio...
It is not always reliable to argue by analogy.靠类推法论证并不总是可靠的.My theory applies to you and by analogy to others like you.我的理论适用于你,照此类推,也适用于像你这样的其他人.The author explained the movement of light by analogy with that of water.作...