只有对其进行时程分析，才能对其安全度进行全面评估；

Unless analyze time history, it could go on the overall assessment of safety.

youdao

由于视见度(视程)很差，飞机返航了。

The aircraft turned back because of poor visibility.

youdao

整体结构简单，可靠性程 度高；

The invention has the advantages of simple structure, high reliability;

youdao

整体结构简单，可靠性程 度高；

The invention has the advantages of simple structure, high reliability;

youdao