UIC564-2 Appendix 7: Test method for detemining the fire resistance of materials by measuring the oxygen index.
2附录7 通过测量氧气量来测定材料的防火性的测试方法（附录7）。
UIC564-2 Appendix 7: Test method for determining the fire resistance of materials by measuring the oxygen index.
2附录7 通过测量氧气量来测定材料的防火性的测试方法（附录7）。
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