You must show proof of a comprehensive health insurance valid in the target country for the entire period of the internship.
在整个实习期间，必须出示所在国家有效的综合医疗保险证明。
2
In the process of logging, the comprehensive logging instrument used in drilling site must has corresponding explosion-proof standard.
录井过程中，钻井现场使用的综合录井仪要具有相关的防爆安全标准。
3
The rational design of the water-proof design of the comprehensive mechanized mining face plays important role in the normal production of the comprehensive mechanized mining face.