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二次风机
1、secondary───n.副手；代理人；adj.第二的；中等的；次要的；中级的
2、secondary consumer───次级消费者
3、secondary color───次生色；n.合成色，间色；二次色
4、secondary products───次级产品；副产品
5、secondary consideration───次要考虑
6、secondary school───n.中学；中等学校
7、fan───v.煽动，激起；吹，吹拂，扇；成扇形散开；飘动；驱散；（棒球、冰球）击球不中；三击不中出局；扩散；辐射；（衣物）呈半圆形展开；n.迷；电扇；风扇；鼓风机；换气扇；折扇，扇子；扇形物；爱好者，崇拜者；山坡脚下的地带；（风车头迎风的）风叶；n.(Fan)（美、法、俄）法恩（人名）
8、secondary education───中等教育
9、secondary succession───[植]次级演替；次生演替系列
1、Presents the air conditioning system and smoke exhaust system design of this project, applies the primary air fan coil system and secondary pump water system in the Top Electronics City.───简要介绍了鼎好电子商城空调XiTong和防排烟XiTong的设计，商城采用了风机盘管加新风空调XiTong和二次泵空调水XiTong。
2、with abnormalities may not effectively treat the diseases they were created to treat, or they may result in secondary problems such as hypoglycemia, Fan said.───正常的干细胞可能不能有效的治疗本来希望他们治疗的疾病，也有可能导致例如低血糖之类的二次问题。
3、The results show that the performance of optimized fan is improved by lowering the energy loss which caused by the secondary flow vortex, the volute tongue, the wake-jet and the angle of attack.───研究结果表明：通过优化有效降低了因二次流漩涡、风机蜗舌结构、尾流-射流和正冲角等造成的能量损失，提高了离心通风机性能。
4、Discussion on bearing wear in secondary fan of double rotary axial fan───对旋轴流风机二级风机轴承易损的探讨