The design &- calculation of ventilation, dust - alleviation technology &- measures and the achievements during construction of tunnel are recommended in this paper.
本文主要介绍洞内施工通风的设计与计算、降尘技术与措施以及所取得的效果。
Therefore, commissioning and maintaining ventilation and air conditioning system is an essential step during the construction and later maintenance.
因此，通风、空调系统的调试与维护是通风空调工程施工及后期维护中的必不可少的工序。
Therefore, commissioning and maintaining ventilation and air conditioning system is an essential step during the construction and later maintenance.
因此，通风、空调系统的调试与维护是通风空调工程施工及后期维护中的必不可少的工序。
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