ASTM E662：通过固体材料对烟雾产生的特定视觉密度的测试方法
日期:2010-09-27 00:00
test methods has not been established. At the present time no basis is provided for predicting the density of smoke generated by the materials upon exposure to heat and flame under other fire conditions.The test method is of a complex nature and the data obtained are sensitive to variations which in other test methods might be considered to be insignificant (see Section 6). A precision statement based on the results of a roundrobin test by a prior draft version of this test method is given in 1
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08/27 01:02