必须确认端头三半环、侧口考贝林固定装置已正确安装且安全。的翻译：Must confirm that the end of the first three and a half ring and side exit exam Beilin fixtures are installed correctly and secure. 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

Must confirm the end of the first three and a half ring, the side port Beilin test fixtures is properly installed and secure.

Must confirm that the end of the first three and a half ring and side exit exam Beilin fixtures are installed correctly and secure.

Must confirm the reason three half rings, the side mouth test the Bering attachment system to install also the security correctly.

It must be recognized that ends 3 semi-ring, side port to Belling fixtures have been installed correctly and secure.

Must confirm that the end of the first three and a half ring and side exit exam Beilin fixtures are installed correctly and secure.