a city gas supplement A supplementary agent is a substance that is added to a substance and causes it to smell. The gas itself doesn't smell. If the gas leaks and doesn't smell, it's hard to find it..
A city gas supplement에 대한 요약내용입니다.
자세한 내용은 아래에 원문링크를 확인해주시기 바랍니다.
원문링크 : A city gas supplement
네이버 블로그
티스토리
커뮤니티