炭田 | [たんでん, tanden] (n) coalfield; coal field; (P) [Add to Longdo] |
海底炭田 | [かいていたんでん, kaiteitanden] (n) submarine coal field [Add to Longdo] |
炭田 | [たんでん, tanden] (n) coalfield; coal field; (P) [Add to Longdo] |
海底炭田 | [かいていたんでん, kaiteitanden] (n) submarine coal field [Add to Longdo] |