该方法基本可由通用部件实现，包括一台工业控制计算机，一块计数板和若干A／D板。
This method can be realized with ordinary parts and boards, including an industrial IPC, several A/D boards and a counter board.
其进一步的优点在于：滚动条滑动块不随时间改变尺寸，在无用户输入的情况下也不移动，使得用户与滚动条控制部件交互作用更容易。
This has the further advantage that the scrollbar thumb does not change size over time nor move without user input, making it easier for a user to interact with the scroll bar control.
其进一步的优点在于：滚动条滑动块不随时间改变尺寸，在无用户输入的情况下也不移动，使得用户与滚动条控制部件交互作用更容易。
This has the further advantage that the scrollbar thumb does not change size over time nor move without user input, making it easier for a user to interact with the scroll bar control.
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