vertical intensity variometer

例句：

1. 1. The vertical intensityvariometer is used to measure theintensity of light in a vertical direction.
   垂直强度计用于测量光在垂直方向上的强度。
2. 2. The vertical intensity variometer wasused to measure the intensity of light indifferent directions.
   垂直强度计被用来测量不同方向上光的强度。
3. 3. The vertical intensityvariometer was used to measure theintensity of light in different directions and distances.
   垂直强度计被用来测量不同方向和距离上光的强度。