The X-R Chart is used to be an example to show the set-up process and the daily application issues of the Control Chart.
并以X-R图为例，介绍了控制图的建立流程及其日常应用中应注意的问题。
2
To introduce the control principle of X-R control chart, and use the principle to control the temperature of coal gas heating furnace.
介绍X - R控制图的基本控制原理，并运用该原理对煤气加热炉的温度进行控制。
3
Secondly, the latest research results of our laboratory on MLCC dielectric material used in over wide temperature X-R and microwave technology are introduced.