摘要： Processing Gain and Occupied Bandwidth ESA Basic Setup (11b)Span 110MHzRBW 100kHzVBW 100kHzSweep Time 500msDetector RMS AverageESA Basic Setup (11a/g) 阅读全文

摘要： The dean can’t see you at the moment. He is addressing the first-year students in the lecture hall.系主任现在不能见你。他正在演讲厅向一年级的学生讲话。 He does nothing that vio 阅读全文

摘要： Astronomers have revealed details of mysterious signals emanating from a distant galaxy, picked up by a telescope in Canada.The precise nature and ori 阅读全文