adj. twin-stage
双级泵 double-stage pump
双级凸轮 Cam of double lift ; double lift profile cam
双级主减速器 double reduction final drive ; Double step gears
双级压气机 two stage compressor
双级压缩 [制冷] compound compression ; two-stage compression
热电偶双级检定法 double-polarity method for calibrating thermocouple ; polarity method for calibrating thermocouple
双级型 BWE ; BLEY ; BWEY
双级继电器 two-stage relay ; two step relay
双级节流制冷器 [制冷] compound throttling refrigerator
他们担心双级制度的建立会使“垃圾大学”的学位变得毫无价值。
They fear the creation of a two-tier system, with worthless degrees for those at "dustbin universities".
注：双级减速比由两单级速比组合而成，上表中未列出的亦可生产。
Note: The double step reducing ratio consists of the both mono-step reducing ratio. The unlisted on the above table also can be produced.
服务器诊所经常提倡“双级”编程-组合两种不同语言-来利用各自的长处。
Server clinic often advocates "dual-level" programming — combination of a couple of different languages — to exploit the strengths of each.
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