Terms for subject Air defense containing by

English	Chinese
amplitude modulation by noise	噪声调幅
amplitude modulation by tone	音频调幅
counter electronic reconnaissance by radar	雷达反侦察
diffraction by aperture	孔径衍绕射
display selected by elevation class	仰角分类选择显示
divide-by-two circuit	二次分频电路
fault isolation by semi-automatic technique	半自动故障隔离技术
FM-by-noise modulation	噪声调频调制
FM degradation by band limiting	由波段限制造成的调频降级
forward propagation by ionospheric scatter	电离层正向传播
forward propagation by tropospheric scatter	对流层散射正向传播
frequency modulation by sine wave+noise	正弦+噪声调频
frequency modulation by tone	音调调频
infrared amplification by stimulated emission of radiation	红外受激辐射放大
jammer tracked by azimuth crossing	方位交叉法跟踪干扰机
jammer tracked by azimuth crossing	方位交叉跟踪干扰源
measurement by radar of precipitation	用雷达进行降雨测量
measurement of gain by comparison method	比较法增益测量
measurement of gain by two identical antennas	绝对法用两个同样的天线进行增益测量
microwave amplification by stimulated emission of radiation	受激辐射式微波放大器
missile guidance by acoustic means	导弹利用声波的制导方法
mixer amplification by variable reactance	参量放大器
navigation by earth reference	地球基准导航
navigation by triangulation	三角测量导航
near-by echo	邻近回波
near-by frequency	邻近频率
person by person optimization	逐步优化方迭
radar navigation by map-matching	雷达导航地图匹配法
reconnaissance by services	军兵种侦察
resistance-trimming by electron beam	电子束阻抗微调
side-by-side display	移位距离显示器
sidelobe suppression by absorbing material	使用吸波材料的副瓣旁瓣抑制
signal representation by orthogonal function	信号正交函数表示法
stand by condition	备份状态
step-by-step counter	阶梯波形成电路
step-by-step synchronization	按步同步
swept FM by noise	噪声扫掠调频干扰
technique for order preference by similarity to ideal solution	最优解接近度排序法