disproportionation catalyst歧: fork; branch化: change; turn; transform催化剂: catalyst; catalytic agent甲苯歧化催化剂: toluene disproportionation catalyst环化催化剂: cyclization catalyst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:歧化催化剂，即可在微信中查询翻译
