sector shutter

例句：

1. 1. The camera has a sector shutter thatcan be opened to adjust the exposure.
   这台相机有一个可开启的扇区快门，可以用来调整曝光。
2. 2. The photographer useda sector shutter to capture the moment ofthe sunset.
   摄影师使用扇区快门捕捉到了日落的那一刻。
3. 3. The filmwas developed using a sectorshutter, which allowed for precisecontrol over the development process.
   该胶卷使用了扇区快门，可以精确控制显影过程。