Standard test method for critical radiant flux of floor-covering systems using a radiant heat energy source.

使用辐射热源法对地板覆盖物进行临界热辐射测试。

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ASTM E970 Standard Test Method for Critical Radiant Flux of Exposed Attic Floor Insulation Using a Radiant Heat Energy Source.

ASTM E970使用辐射热能源评定暴露的阁楼地板绝缘的临界辐射通量的试验方法。

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When the radiant energy of the sun falls on the earth, it is changed into heat energy, and as a result the earth is warmed.

当太阳的辐射能落在地球上时， 就变为热能，于是， 地球暖和起来了。

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