隧道通风 meaning in Chinese

tunnel ventilation

Numeric simulation of xiefeng mountain tunnel ventilation
雪峰山隧道通风数值模拟研究
Specifications for design of ventilation and lighting of highway tunnel
公路隧道通风照明设计规范
Tunnel ventilation fan
隧道通风风扇
In the second section a ventilation control system based on fuzzy control theory is proposed
本文第二部分提出了基于模糊控制理论的隧道通风控制系统。
Can you give more information about it ? it is highly likely that you do not have to use user subroutine
在一个隧道通风的数值模拟中，有一竖井设置风机，请教高手，如何使用子程序进行操作？

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