引言期望各国电子技术委员会将本标准改写为各自国家文字的版本,也鼓励有关当局制订出带有相关画面或图形的简化版本,以便尽可能使外行者理解本标准。本标准中所提到的“指定代理人”是指有资格和(或)有经验执行某项任务的人员。 The introduction expects that the electronic technical committees of various countries will rewrite this standard into the versions of their respective national languages. It also encourages relevant authorities to develop simplified versions with relevant screens or graphics so as to make laymen understand this standard as much as possible. The “designated agent” mentioned in this standard refers to a person who is qualified and/or has experience in performing a task.