... 施工通风 construction ventilation 运营通风 operation ventilation 机械通风 mechanical ventilation ...
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...struction; during construction temporary ventilation 隧道运营通风permanent ventilation of tunnel; operation ventilation 隧道照明：tunnel lighting ..
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So, the special plateau climate proposes new problems to the operation ventilation. The locomotives running in the tunnel are tracked by internal combustion engine.
随着青藏地区的开发,青藏铁路的建设也在快速开展着,然而,特殊的高原气候对于内燃机牵引的铁路隧道运营通风提出了新的问题。
参考来源 - 拉日线铁路隧道运营通风研究·2,447,543篇论文数据，部分数据来源于NoteExpress
Cost for operation ventilation, operation safety, smog exhaust during a fire and its control and other key problems are well addressed.
在满足通风要求的基础上，重点研究了通风运营成本及运营安全、火灾排烟及火灾通风控制等关键问题。
It has many advantages including wide application, simple operation, decreased injury and stimulation to respiratory tract, less complication and reliable ventilation efficacy.
具有应用范围广，操作简便，对呼吸道的损伤、刺激小，并发症少，能维持有效、可靠的通气。
Methods:The nutritional support treatment was performed in 87 cases of serious patients post heart operation during mechanical ventilation.
方法：87 例各种类型的心脏手术后危重病人，在机械通气期间给予营养支持治疗。
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