目的：通过对医用活度计的检验，改善放射性核素活度的测量准确性，减少不必要的照射。
To improve the measurement accuracy of the radionuclide activity by verified the medical activity meter of user in order to reduce unnecessary exposure.
电子湿度计可以直接测量溶液上部密闭空间的相对湿度，而不能直接测量溶液的活度。
An electronic hygrometer can be used to directly measure the relative humidity over the solution placed in hermetic room without direct measurement of its activity.
电子湿度计可以直接测量溶液上部密闭空间的相对湿度，而不能直接测量溶液的活度。
An electronic hygrometer can be used to directly measure the relative humidity over the solution placed in hermetic room without direct measurement of its activity.
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