统一市场single market
单面机架single side rack
单极断路器single-pole circuit breaker
【电】 单精准度数字single-precision number
钇铁石榴石单晶器件yig single crystal device【电子】;yttrium iron garnet single crystal device【电子】
单收缩single twitch
单自由度系统single degree of freedom system
单点压力机single-point press