Google dictionary has this information about the origin of ex: Submit a sample of academic writing, e.g., a dissertation chapter. 防爆标志ex de iic t6 gb的含义是:该电气设备具有防爆功能,采用隔爆和增安复合型防爆形式,适用于除煤矿外的其他爆炸性气体环境,其设备表面温度不超过85℃,且设备保.
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. Does ex have a full form? But what is the origin of the usage as a prefix in the words.
Is short for exempli gratia, and is in common use to introduce an example within a sentence.