樓主: billaim
|
請(qǐng)問這樣測(cè)量硬度準(zhǔn)確嗎 |
點(diǎn)評(píng)
hrb用球頭測(cè)量,,這種螺母的總試樣力是否為980.7?
| ||
| ||
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, 2024-12-29 06:57 , Processed in 0.051254 second(s), 18 queries , Gzip On.
Powered by Discuz! X3.4 Licensed
© 2001-2017 Comsenz Inc.