8895
|
7
|
弱弱问一下,管道的试压为什么必须在管沟回填后进行呢? |
|
|
|
||
|
||
|
||
|关于我们|网站地图|开云平台官方入口(ICP11007657-3)
GMT+8, 2024-2-24 13:38, Processed in 0.028260 second(s), 17 queries , Gzip On, MemCached On.
Powered by Discuz! X3.5
Copyright ? 2001-2023开云注册登录 .