Media service requests need higher network bandwidth and good service for long times.
流媒体的出现对网络带宽及网络服务质量提出了更高的要求。
Engine brake, exhaust brake and electrical eddy current rail brake have been used independently as continuous brake device for long times.
发动机制动、排气制动和电涡流缓行器单独作为持续制动装置使用已经有相当长的时间了。
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