single jet单喷口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-unit operation单机运行,单机牵引single row ball bearing单排滚珠轴承single-shed insulator单裙隔电子single tree measurement单株立木测定single oocyst isolation单卵囊分离技术single-side finishing单面整理single-risk insurance单一风险保险single base propellants单基发射药single breaker dual bus单断路器双母线single-sited catalyst单活性中心催化剂