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| 21. | In System / 32, one of the twelve keys in the top row of the keyboard ( numeric, and = ) when pressed immediately after the CMD key. Command keys control system functions as well as the execution of application programs. |
| 在IBM system/32中,键盘上排的12个键。当按下CMD键(命令识别键)后,立即再按下这12个键(即数字“0”到“9”,“-”及“=”)之一时,上述命令键将控制系统的操作和应用程序的执行。 |
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| 22. | The dash line indicates the possibility of a direct input to the control system through an angle-of-attack indicator. |
| 虚线表示，通过攻角指示器，有可能直接输入到控制系统去。 |
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| 23. | Automatic control system |
| 自动控制系统 |
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| 24. | The complete signal path in a control system, represented as a group of units, which is connected in such a manner that a signal started at any point follows a closed path and can be traced back to that point. |
| 由一组单元连接构成的控制系统中完整的闭合信号通路。信号从一点出发,在闭环中传送,最后返回出发点。 |
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| 25. | A special control system in which the output variable is controlled directly by the system input, ?i.e.,? without feedback. |
| 一种特殊的控制系统，在这种系统中，输出变量受系统的输入直接控制，即没有反 |
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| 26. | closed-loop control system |
| 闭环控制系统 |
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| 27. | digital blending control system |
| 数字式混合比率调节器 |
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| 28. | The control system shut off the gasoline fuel supply at a precise moment, causing the V-1 to dive to the ground. |
| 控制系统在某个恰好的时刻切断汽油燃料的供应，从而使V-1向地面俯冲。 |
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| 29. | airborne warning and control system |
| 空中预警和控制系统 |
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| 30. | centralized traffic control system |
| 集中式交通控制系统 |
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