In this paper a new method for detection of pollution trace gases with laser mass spectrometry is presented and the calibration procedure is also given.
介绍了一种新的环境污染痕量气体探测方法——激光质谱法，并给出了定标方法。
Rigaku 3080e3 X-ray spectrometer was applied to the determination of major and trace mineral elements in muskmelon, calibration was made by using national plant standard reference materials.
报道了日本理学3080e3型x -射线荧光光谱仪在测定甜瓜样品常量和微量矿质元素中的应用。
It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit, addition circuit, compare circuit and multiplication circuit etc.
介绍了用自平衡比较仪通过自校、加法、比较和乘法等校准线路实现直流大电流量值的绝对溯源。
It can be obtained the trace to the source of large direct current with self-balancing DC comparator through self-calibration circuit, addition circuit, compare circuit and multiplication circuit etc.
介绍了用自平衡比较仪通过自校、加法、比较和乘法等校准线路实现直流大电流量值的绝对溯源。
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