aillafeng |
2011-12-06 14:51 |
在UL1993中 CLAUSE 5.3.2 a polymeric material used to enclose electrical parts shall have a Relative Thermal Index(RTI), including electrical and mechanical ,with impact properties of at least the temperature measured during the temperature test of clasue 8.5, unless the measured temperature is less than 65degree 请问上段最后应该 怎样理解 |
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