Thermal imagery produces a visual record from natural heat radiating sources.

热图象由天然热辐射源产生一种可见的记录。

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As a kind of silicate mineral, cordierite turns into an important infrared radiating material because of its predominant infrared radiating property and better thermal and chemical stability.

堇青石是一种硅酸盐矿物，因其具有优良的红外辐射特性、较高的热稳定性和化学稳定性等优点而成为一种重要的红外辐射材料。

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The existing heat preservation cap is in the square or rectangular shape, the radiating area is large, and the thermal insulation and heat preservation effect is not good.

目前使用的保温帽都是方形或矩形的，散热面积大，绝热保温效果差。

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