?型号表示
... 外壳防护等级：IP64 型号表示 Model designations 型号规格 Types and specifications ...
型号编制规则
In fairness, everyone seems to be trying to copy the Germans in using alphanumeric model designations, and most of them are awful.
FORBES: Magazine Article
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。