haulage drift
常見例句
- Glory-hole is the vital haulage passage in the mine of drift hole with the glory-hole method. Whether the glory-hole is normal or not it may cause a tremendous influence to the mine production.
溜井是平峒溜井開拓方式礦山的運輸咽喉，溜井正常與否對礦山生產(chǎn)影響極大。 返回 haulage drift