costeaning
/'kɒsti:ənɪŋ/
📖 中文释义
- 槽探
📘 English Definition（英文释义）
- n. The process by which miners seek to discover metallic
- lodes. It consist in sinking small pits through the superficial
- deposits to the solid rock, and then driving from one pit to another
- across the direction of the vein, in such manner as to cross all the
- veins between the two pits.