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Terms for subject Explosives and Explosive Ordnance Disposal containing grade B | all forms | exact matches only | in specified order only
| English | Chinese |
| grade B chamber blasting | B 级硐室爆破 |
| Grade B reserves | B 级储量详查、精查阶段，按勘探规范对本级储量要求的条件，用系统的勘探工程控制勘探程度较高的煤炭储量 |