57.there is no echo signal. But brightness, scanning line are still exists.

没有，亮度，扫描均正常。

58.there is no echo and brightness, it is examined that fuse has broken.

雷达无亮度，无。经查为保险丝烧断。

49.the surface of display sweep coil contaminated by dust. The echo sighals in some sectors missing on the screen.

显示器扫描线图表面不清洁，荧屏上信号部分区域丢失。

One theory is that this is caused by a quasar ionization echo.

一种理论认为这类星体电离引起的。

799. Our radar shows a strong echo from the thunderstorm ahead.

799. 我们的雷达显示前方雷暴的强烈。

There's a radar return about a mile-and-a-half below the surface of the south pole ice that is clear-cut signs of liquid water.

南极冰面下方约一英里半出现雷达，这明确的液态水迹象。

Meteorologists often refer to it as the hook echo, because of the hook shape that ends up taking.

气象学家通常将其称为钩状，因为它最终呈钩状。

Meteorologists often refer to it as the hook echo, because of the hook shape that it ends up taking.

气象学家通常将其称为钩状，因为它最终呈现出钩状。

50.the echo signals are very weak, small targets can not be sighted. it is possible to say that magnetron is out of service

信号太弱，小目标看不到，可能磁管老化。

An antenna onboard the satellite emits microwave pulses to the surface of the earth and records the echoes that bounce back.

卫星上的天线向地球表面发射微脉冲并记录反弹来的。

I am adapting the same models that detect plumes in city images to detect light echoes in images of the sky.

我正调整检测城市图像中羽流的相同模型，以检测天空图像中的光。

Part of the pulse is reflected back at the event and the observer measures the time at which he receives the echo.

部分脉冲事件中被反射来，观察者测量他接收到的时间。

To get a complete picture, waves need to reach different depths in the patient's body, bypassing some tissues while echoing off others.

为了获得完整的图像，需要到达患者身体的不同深度，绕过一些组织，同时其他组织。

Meteorologists often refer to it as the hook echo because of the hook shape that it ends up taking but there aren`t the only features we look for.

气象学家经常把它称为钩状，因为它最终呈现的钩状，并不我们要寻找的唯一特征。

48.the waveguide assembly was full water . the radar can not transmit and receive normally . there is a cluster of echoes in the centre of radar screen.

导管进水，雷达不能正常发射与接收，雷达屏幕中间部位有一团。

66.the echo signals are weak , the edges of the signals are unclear as well , the current of the magnetron is a little bit less than normal

弱，边缘也不清晰，磁控管电流略小正常值。

Well, if Burke isn't coming, then we have to confirm Denny's condition ourselves. we get the blood work, we do the echo, and no one even has to know what Izzie did.

如果 Burke 不能来的话，我们必须自己来确认 Denny 的情况，我们要让血液流通，做检查，而且没人需要知道 Izzie 干的。