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...
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...