順丁橡膠 shùndīngxiàngjiāo polybutadiene rubber Origin Definitions Defs Strokes Stroke Words Sentences Sents 顺 順 shùn noun in the same direction moving or acting in the same direction丁 dīng butyl (chemistry) A prefix or group indicating a four-carbon chain, such as butyl.橡胶 橡膠 xiàngjiāo noun rubber rubber; caoutchouc; a highly elastic polymer that is waterproof, airtight, and non-conductive