Cov khoom siv yog 20mng li cas?
2 {0 mng yog cov tshuaj muaj zog zoo ntawm cov pa roj carbon monoxent) tsuas yog muaj cov pa roj carbon monoxide Cov hlau no tau siv dav siv hauv kev tsim kho, tshuab, nkoj, tsheb, thiab lwm lub tais yas thiab tsis pub dhau lub zog thiab hardness. Tsis tas li ntawd, 20mNng tseem siv los tsim cov kav hlau seamless rau kev siv lub siab kub, uas ua tau raws li lub teb chaws tus qauv gb {10}}.
20mng Tshuaj Muaj Zog (%)
| muaj pes tsawg | C | Si | Mn | P | S | Cr① | Ni① | CU① | Mo① | V ① |
|---|---|---|---|---|---|---|---|---|---|---|
| Lub min | 0.17 | 0.17 | 0.7 | - | - | - | - | - | - | - |
| Tus zuag | 0.23 | 0.37 | 1 | 0.025 | 0.015 | 0.25 | 0.25 | 0.2 | 0.15 | 0.08 |
