Compared with half peak voltage level trigger manner, the measurement accuracy is improved significantly and the application field of digital opticalscreen is expanded.
与传统的峰值一半电平触发方式相比，能够显著提高测试精度，从而扩大了光幕靶的使用范围。
2
Letters and other characters on the screen are formed out of ink that has a high optical contrast with the background, making them easy to read.
在屏幕上的字体由墨水形成，与背景形成很高的光学对比度，使之便于阅读。
3
The two-pound device had a seven-inch screen, no optical drive or hard drive, and occupied half the space of a typical notebook computer of the day.