檩条安装须分清规格型号，必须与设计文件相符。的翻译：Purlins installed shall distinguish between specifications, must be consistent with the design document. 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

Required to distinguish between purlin installation specifications, design documents must match.

Purlins installed shall distinguish between specifications, must be consistent with the design document.

正在翻译，请等待...

Purlins installed shall distinguish between specifications, must be consistent with the design document.