haulage drift
常见例句
- 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.
霤井是平峒霤井開拓方式鑛山的運輸咽喉，霤井正常與否對鑛山生産影響極大。 返回 haulage drift