3.2资源列表
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[国外标准] BS 7655-3.2-1993 Specification for insulating and sheathing materials for cables. PVC insulating com
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[国外标准] BS 874-3.2-1990 Methods for determining thermal insulating properties. Tests for thermal transmittan
[国外标准] BS 7655-3.2-1993 Specification for insulating and sheathing materials for cables. PVC insulating com
[国外标准] BS 874-3.2-1990 Methods for determining thermal insulating properties. Tests for thermal transmittan