... useful pressure 有用压力 useful range 有效测量范围; 有效范围 useful screen area 有效屏幕面积 ...
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... dynamic range 动态量程；动态范围 ... effective range 有效测量范围；标度尺的工作部分；有效距离；有效范围；有效射程 ... 'faɪərɪŋ reɪnʤ] 射击场；射击距离 ...
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... effective e radius 有效半径 effective e range 有效测量范围 effective e reactance 有效电抗 ...
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约翰逊噪声在很宽的频率范围内呈均匀分布，所以减小噪声带宽能够有效地降低测量中的噪声。
Johnson noise is uniformly distributed over a wide frequency range, so reducing the noise bandwidth effectively decreases the noise in the measurement.
同时，利用上述结论提出了一种新颖的衍射测量方法，能够有效地简化仪器结构，提高测量精度，扩展测量范围。
Moreover a new measurement method based on the result mentioned above is developed that can simple the structure of instrument, increase measurement, extend measurement range.
带宽是150赫兹，并且所有测量的有效范围是在1 – 10微伏。
The bandwidth was 150 Hz and the effect in all measurements was between 1 - 10 microvolts.
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