Unfortunately, a replacement instrument isn't always available. Take, for example, the HP8902A RF measuring receiver.

不幸的是，一种仪器并不总是存在可更换的目标，例如，HP8902A RF测量接收机。

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In order to meet the traceability of large attenuation, a new model PAS-1 attenuation measuring receiver and then a new national attenuation standard system are developed.

为了满足大衰减量值的溯源，研制成功了新的PAS 1型衰减测量接收机和新的国家标准装置。

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In intensity-modulated type optic fiber sensors, luminous intensity of a light source and operating stability of photoelectric receiver are the key factors for determining measuring accuracy.

在强度调制型光纤传感器中，光源发光强度和光电接收器工作的稳定性，是决定测量精度的关键因素。

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The basics behind Loran and GPS are largely the same, with devices measuring the time it takes for a signal to travel between a transmitter and your receiver.

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