The space telescope has taken the clearest pictures ever of Pluto.太空望远镜拍摄到了迄今为止最清晰的冥王星的照片。to look at the stars through a telescope用望远镜观察星星With a telescope you can see the huge crater of Ve - suvius.用望远镜你能看到巨大的维苏威火山口....
Automatic Gain Control ( AGC ) is widely used in communication. radar & amp ; instrumentation systems.自动增益控制 ( AGC ) 环路广泛地应用于通信、雷达 、 仪器系统.There is a radar net in our area.在我们那个地区有一个雷达网。The application of wide - band digi...
总计109个病人做了体格检查, 心电图,超生心动图.A total of 109 patients underwent physical examination, electrocardiogram and echo cardiography.超声波心动图通常是最为有用的MVP诊断性检查.An echocardiogram is the most useful test for diagnosing MVP.超声心动图检查肺动脉瓣功能良...