这项工作适用于直接测试或间接测试。

This can be done with a direct test or an indirect test.

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任何间接测试方法必须表明与设备的状况有关。

Any indirect test method must have been shown to correlate with the condition of the equipment.

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该表达式可用作噪声等效带宽的一种间接测试方法。

This expression may be used as an indirect testing method of noise equivalent bandpass.

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