shadow mask colour picture tube

例句：

1. 1. The shadowmask is used to create a sense ofdepth in the image.
   阴影遮罩用于在图像中创造深度感。
2. 2. The colorpicture tube is essential for displaying high-quality images.
   彩色显像管对于显示高质量图像至关重要。
3. 3. The new technology allowsfor a more seamless transition between different screens.
   新技术使得不同屏幕之间的过渡更加无缝。