This echo-location in bats is often compared with radar , the principle of which is similar .. 人们常把蝙蝠的这种回声定位与雷达相比较，因为它们的原理是相似的。
Two radar units suspended from huge balloons provide low-altitude coverage of the entire peninsula . 悬挂在巨大气球下面的两套雷达把整个半岛的低空都置于它们的探测范围之内。
For example, dopple radar, airspeed, waterspeed, or some form of ground-based aids might be used . 例如，可以采用多普勒雷达、空速、水速、或者由地面基地提供的某种形式的信息。
Radar sets in patrol planes enabled the british and american navies to bring the german submarines under control . 安装在巡逻飞机上的雷达设备，使英、美海军得以制服德国潜艇。
German scientists quickly developed an instrument which picked up the radar signal and gave the v-boat warning . 德国科学家很快造出了一种能测知雷达信号并给潜艇发出警报的仪器。
The development of microwave radar during the world war ii also had immense consequences for solid-state physics . 第二次世界大战期间，微波雷达的发展对固体物理学也产生了巨大影响。
It was not easy designing a radar system able to pick out a submarine peniscope from aimd the endless rolling wave father . 要设计一种能从不断翻滚的海浪回波中辨别出潜艇望镜的雷达系统，并非易事。
The original radar combined these two things, as its english name radar showed: radio detection and ranging . 最初的雷达正如它的英文名称“雷达”（RADAR）所表示的那样，包括两个方面：无线电测物和测距。
The problem, which most of the radar room crew was working at feverishly, was to clear a path for the air force kc-135 . 现在的问题是要为空军的KC-135让出一条路来，雷达室内大部分工作人员正在紧张地设法解决这个问题。
Radar data processing on the high maneuvering platform 高机动平台下雷达数据处理
