由内部检测手段可探测到，但费时较长的翻译：By internal testing methods to detect, but takes longer 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

By internal detection means can detect, but takes longer

By internal testing methods to detect, but takes longer

May survey from internal examination method, but time-consuming long

by internal means of detection can detect up to, but time-consuming longer

By internal testing methods to detect, but takes longer