| 术语 | trackball |
| 释义 | trackball 跟踪球；［追踪球］ A ball mounted in a box equipped with position sensors. A trackball does not move the cursor in direct proportion to its position, but instead it transports the cursor in proportion to the speed at which it is rolled and in the direction of its rotation. This method of operation enables a cursor to be precisely positioned because the speed of rotation can easily approach zero. However, by rotating the ball rapidly, the cursor can be moved fast, so as not to cause undue delay. 一种控制显示屏上光标移动的设备，它由安装在一个具有位置传感器的盒子上 的圆球构成。跟踪球不是以正比例关系把光标移到它所指示的位置，而是按与它的转动速度 和方向相适应的关系移动光标。由于跟踪转动速度容易趋近于零，因此可对光标准确定位。 而且可以通过迅速转动跟踪球，很快移动光标，以便不引起过分的延迟。 |
| 随便看 |
|
计算机英汉双解词典包含21137条计算机术语英汉翻译词条，基本涵盖了全部常用计算机术语的翻译及用法，是计算机学习及翻译工作的有利工具。