Basic principle, experiment condition, operating process, method and steps of X-ray diffraction method to determine free silica content of respirable dust in mines are introduced in this paper.
本文介绍了应用X射线衍射仪测定矿山呼吸性粉尘中游离二氧化硅含量的基本原理、实验条件以及操作过程、方法步骤等。
Based on the operating principle of rotary viscometer, the dynamical performance experiment rig of spiral micro robot was fabricated.
基于旋转黏度计工作原理，建立内窥镜机器人动力学性能实验台。
This paper has expatiated on the measuring principle, the operating principle of experiment system and the evaluation of uncertainty of measurement.
本文详述了测量原理、实验系统工作原理和测量不确定度评定。
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