@hjelle_brian @JamesMassard Is there some objective standard for assigning a letter, or the entire concept mostly or entirely about public communications? After all, scientists can use alphanumeric designators, right?
@hjelle_brian@JamesMassard是否有一些客观的标准来分配一封信，或者整个概念主要或完全与公共通信有关？毕竟，科学家可以使用字母数字指示器，对吗？