singleline只限于一种商品的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-flow turbine单流式涡轮机,单流式汽轮机single-frame images单帧图像single-bundle cable单束电缆single-prong tester单叉探测器Single station factor单站要素single purchase winch单卷筒绞车single-effect still单效蒸馏器single point grouding单点接地single-lane highway单车道公路Single potential well单势阱