词汇	rate of repetition
释义	rate of repetition 重复率
随便看	optical brightening agent optical brightening component Optical brighter agent optical brightness optical brinell hardness tester optical budget optical buffer optical buffering optical bulkhead connector optical burst switch Optical burst switched network optical burst switching optical burst-switching optical burst switch-ing optical burst switching network optical burst switehing optical bus optical bus LAN optical bus parallel model optical bus power margin optical bypass relay optical-cable optical cable assembly optical cable communication optical cable communication system