Editorial Note: This article is written with editorial review and topic relevance in mind.
Does ex have a full form? But what is the origin of the usage as a prefix in the words. Google dictionary has this information about the origin of ex:
Richard Sherman's house was robbed at gunpoint while his family was home
防爆标志ex d iic t6 gb是一个详细的电气设备防爆标识，它由多个部分组成。 ex是中国及国际电工委员会的防爆标志，表示该设备遵循gb3836和iec60079的防爆标准。 d代.
