single hop单段singleadj.单一的；单个的；特指某人或某物；单身的；单人的；单程的n.单程票；单曲；单人房间；单身者；<美>一元纸币；(网球)单打比赛；(板球)一分打；(棒球)一垒打v.挑选(一个)single chip microeompute单片机single source tomography单源层析single-oospore progeny单卵孢后代single-phase generator单相发电机single sense stimulation单一感官刺激single-frequency sound单频声single step purification一步纯化(法)single-track tape unit单轨磁带机single crystal technique单晶体法single-phase grounding单相接地