di.quatn.(名词)A strong, nonpersistent, yellow, crystalline herbicide, C2H 2Br 2N 2, used to control water weeds. 杀草快:一种强力非持久性、黄色、晶状除草剂C2H 2Br 2N 2,用于控制水生杂草 来源:di- di-quat(ernary) quat(ernary)