坑井 こうせい noun (common) (futsuumeishi) 坑井こうせい Noun English JMdict (multilingual) 1 noun (common) (futsuumeishi) winze (mining);well (oil, gas) 漢字 kanji used 坑 pit, hole 7画 井 well, well crib 4画
坑井こうせい Noun English JMdict (multilingual) 1 noun (common) (futsuumeishi) winze (mining);well (oil, gas)
Shirabe