目视观察的英文

visible observation

visual observation

• 目视:    visual
• 观察:    observe; watch; su ...
• 空中目视观察:    air reconnaissance ...

例句与用法

1. The disappearance of monomer droplets at the onset of interval iii can be observed visually .
   在阶段开始时就可以目视观察到单体液滴的消失。
2. We asked the post office to fault the telephones, and went in to make a visual inspection of the cipher room area .
   我们让邮局给电话弄点儿故障，然后进入大使馆对密码室所在的位置作一番目视观察。
3. The shortest possible tube length is 520 mm with the extension tube removed , while the standard tube length during visual observing is 845 mm
   最短的可能长度用被移动的延长管是520毫米而标准的全长在目视观察期间是845毫米。
4. A visual check of air gaps is sufficient , but mechanical backflow preventers have to be tested with properly calibrated gauge equipment
   尽管安装气隙足够目视观察，但是机械式防回流阀还是必须用适当量程的仪表设备进行检测。