2) Daim ntawv cog lus tsis pub lwm tus paub tuaj yeem kos npe
3) Xya hnub rov qab lav
Tseem ceeb tshaj: peb tuaj yeem muab tsis tau tsuas yog cov khoom lag luam, tab sis kev pabcuam kev daws teeb meem!
COB | B | Co | Si | O | C | Fe |
99% | 11.5% | 87.7% | 0.01% | 0.09% | 0.02% | 0.06% |
Code | Tshuaj muaj pes tsawg leeg% | ||||||
Purity | B | Co | Particle Loj | ||||
≥ | |||||||
COB-1 | 90% | 15-17% | Bal | 5-10 hli | |||
COB-2 | 99% | 15-16% | Bal | ||||
Hom | Epoch |