clay catalyst粘土: clay催化剂: catalyst; catalytic agent白土催化剂: caly catalyst稀土催化剂: rare earth catalyst高岭土催化剂: kaolin 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:粘土催化剂，即可在微信中查询翻译
