例句與造句

1. To minimise the temperature gradient across the sample , the light aperture in the block is only 2 . 5mm ?
   為了減小樣品上的溫度梯度，臺體上的光孔直徑只有2 . 5毫米。
2. It's difficult to find light aperture in a sentence. 用light aperture造句挺難的