A city of southwest Siberian U. S. S. R. northeast of Novosibirsk. It is one of the oldest coal-mining centers in the Kuznetsk Basin. Population, 110,000.
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。
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In accordance with the procedure of USA SOP-CR-007 standard, it is derived that, when r. o. m. coal is mixed with mineral matter, the mixture varies in property compared with r. o. m. coal.