3191| 2
|
請(qǐng)問(wèn)碳當(dāng)量是不是只在鋼材焊接時(shí)計(jì)算,像鋁合金這類不計(jì)算碳當(dāng)量 |
| ||
小黑屋|手機(jī)版|Archiver|機(jī)械社區(qū) ( 京ICP備10217105號(hào)-1,京ICP證050210號(hào),浙公網(wǎng)安備33038202004372號(hào) )
GMT+8, 2024-11-18 20:15 , Processed in 0.053632 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.