conversion rod变换杆
conversionn.转变;换算
conversion of chair forms[化] 椅式互变
conversion in pure states纯态转化
conversion of water source水源转换
conversion ton-kilometer换算吨公里
conversion of the void act无效法律行为的侵占行为
conversion of word meaning化用词意
conversion characteristics变换特性
conversion speed governing变频调速
conversion and maintenance转化维护
conversion floor structure结构转换层