1999资源列表
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[国外标准] NEMA PB 2.2-1999(R2004, R2009) Application Guide for Ground Fault Protective (GFP) Devices for Equip
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[国外标准] BS EN 60439-1-1999 Low-voltage switchgear and controlgear assemblies — Part 1 Type-tested and partia
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[国外标准] BS EN 60320-2-3-1999 Appliance coupler for household and similar general purposes — Part 2-3 Applian
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[国外标准] BS EN 60068-2-30-1999 Environmental testing - Part 2 Tests - Test —b and guidance —amp heat, cyclic
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[国外标准] BS EN 60034-2-1999 Rotating electrical machines — Part 2 Methods for determining losses and efficien
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[国外标准] BS EN 50263-1999 Electromagnetic compatibility (EMC) Product standard for measuring relays and prote
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[国外标准] BS EN 50126-1-1999 Railway applications — The specification and demonstration of Reliability, Availa
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[国外标准] BS EN 50091-1-2-1999 Uninterruptible power systems (UPS) Part 1-2 General and safety requirements fo