With custom curve of calibration function, stored high precision complete mathematic simulation curve, ensure the direct-reading concentration value accuracy.

具备自定义曲线校准功能，预存高精度全数学模拟工作曲线，确保直读浓度值的准确性。

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Experimental result showed that the error between concentration value (measured) by infrared absorption gas sensor and actual value achieved demands of coal safety verification.

实验结果表明，由红外吸收瓦斯传感器测量的浓度值与实际值之间的误差达到了煤安验证的要求。

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"Gemstones are different from other kinds of mining, " Hughes says, because there's a high concentration of value in very small areas and relatively few stones.

WSJ: Secret Rocks and Gem Hunters | WSJ.Money Summer 2013

Portfolios that hold a higher concentration in small-cap stocks and value stocks have more risk than the market as a whole.

FORBES: Any Monkey Can Beat the Market