分发系统 ( RFDS ) RFDS是包括天线共享器 、 多路耦合器、洞合成仪和绝缘物.RF Distribution System ( RFDS ) The RFDS is consists of duplexers, receiver multicouplers, cavity combiners and isolators....
A novel furan resin was synthesized by polycondensation between furfuralcohol and furfural.用糠醇和糠醛缩聚制备了新型呋喃树脂.Resinification of furfural on the catalyst was the main cause of deactivation.糠醛树脂化结焦是导致催化剂失活的主要原因.Fig. 5 Varia...
At times the president's motorcade slowed to a crawl.有时总统车队放慢速度缓缓而行。His motorcade was jeered by angry residents.他的车队遭到愤怒的当地居民的嘲讽.The President's motorcade glided by.总统的车队一溜烟开了过去。...
Britain does not agree and neither do Denmark, Portugal and Ireland.英国不同意，丹麦、葡萄牙和爱尔兰也持反对意见。Dozens of people milled around Charing Cross Road and Denmark Street.很多人在查令十字路和丹麦街周围徘徊。Denmark recognised the potential of wind e...