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- 9F级燃气轮机9F gas turbine
- 9F级单轴联合循环机组9F single-shaft combined cycle unit
- F级燃气轮机F class gas turbine
- 9F级燃机9F series gas turbine
- 燃气轮机gas turbine
- 级联connection
- 9F燃气-蒸汽联合循环机组9F gas-steam combined cycle unit
- 校级field rank
- 英语四级English Band 4
- 大学英语四级College English Band 4
- 方法回顾性分析输尿管镜气压弹道碎石术180例,使用德国Wolf7.9F输尿管镜配合丹麦气压弹道碎石机。[Methods] 180 cases of these conditions were treated with ureteroscope pneumatic lithotriptor, used Wolf 7.9F ureteroscope made in Germany and pneumatic lithotripter made in Denmark.
- 一级的firstlevel
- 船级ship' classification
- 三级片third-grade film
- 无级stepless
- 级配graduation
- 两级two-stage
- 第二级secondary
- 大学英语六级考试CET-6 [College English Test, Band Six]
- 第一级first step