破碎岩层 meaning in English
broken rock
Examples
- Impregnated drillbits are suitable for drilling in the broken rock formation with f 8 - 12 , and soft hard , hige dense , strong grinding skidding rock formation
孕镶钻头适用于f 8 - 12级破碎岩层软硬互层及坚硬致密的强研磨性岩层打滑岩层的钻进。