3-1-15正洞通风

洞内通风,通风机、风管搬运、安装、调试、使用、维护及拆除。

 

 

注:对于隧道长度在500m以内的短隧道不计正洞通风费用。

 




This file is decompiled from a .CHM file
by an UNREGISTERED version of Easy CHM.
You can download Easy CHM at : http://www.eTextWizard.com