Only when olt receives the first few bits of the uplink burst of onu and achieves the bit synchronization can the onu signal be restored Olt必须在收到onu上行突发的前几个比特内实现比特同步，才能恢复onu的信号。
2.
A string of pavement cafes are the pride and joy of dusseldorfers and one of the long - time favorites is caf bittner 一长串的路边咖啡馆是杜塞尔多夫居民的骄傲和乐园。比特内尔咖啡馆是长期以来一直受到人们青睐的咖啡馆之一。
