diazine ring二: two环: ring; hoop二嗪: diazine三嗪环: triazine ring二酮呱嗪环: diketopiperazine ring下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:二嗪环,即可在微信中查询翻译