In this article, we review three rapid methods to predict manure nutrient content, including hydrometer, conductivity meter and Near Infrared Reflectance Spectroscopy.
本文介绍了三种快速预测畜禽粪便肥料成分含量的方法，包括比重计测定法、电导仪测定法以及近红外光谱分析法。
A micro conductivity meter with pen-type structure is described.
介绍了一种笔型微电导率仪。
The verification method and principle for the conductivity meter of light fuel oil are described.
叙述轻质油料电导率仪的检定原理及检定方法。
The functions and the technical characteristics of the 11 main models in conductivity meter PC software subsystem were introduced in details.
其中详细介绍了电导仪pc机软件子系统中的11个主要模块的功能及技术特点。
The functions and the technical characteristics of the 11 main models in conductivity meter PC software subsystem were introduced in details.
其中详细介绍了电导仪pc机软件子系统中的11个主要模块的功能及技术特点。
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