En资源列表

[国外标准] BS EN 50174-1-2009 Information technology — Cabling installation — Part 1 Installation specification

[国外标准] BS EN 50173-5-2007 Information technology - Generic cabling systems. Data centres

[国外标准] BS EN 50173-4-2007 Information technology — Generic cabling systems — Part 4 Homes

[国外标准] BS EN 50172-2004 Emergency escape lighting systems

[国外标准] BS EN 50171-2001 Central power supply systems

[国外标准] BS EN 50164-6-2009 Lightning Protection Components (LPC) — Part 6 Requirements for lightning strike

[国外标准] BS EN 50164-5-2009 Lightning Protection Components (LPC) — Part 5 Requirements for earth electrode i

[国外标准] BS EN 50160-2007 Voltage characteristics of electricity supplied by public distribution networks

[国外标准] BS EN 50160-1995 Voltage characteristics of electricity supplied by public distribution networks

[国外标准] BS EN 50144-2-7-1996 Safety of hand-held electric motor operated tools. Particular requirements for

[国外标准] BS EN 50143-2009 Cables for signs and luminous-discharge-tube installations operating from a no-load

[国外标准] BS EN 50131-8-2009 Alarm systems — Intrusion and hold-up systems — Part 8 Security fog devicesystems

[国外标准] BS EN 50131-6-2008 Alarm systems — Intrusion and hold-up systems — Part 6 Power supplies

[国外标准] BS EN 50131-5-3-2008 Alarm systems — Intrusion systems Part 5-3 Requirements for interconnections eq

[国外标准] BS EN 50131-3-2009 Alarm systems — Intrusion and hold-up systems — Part 3 Control and indicating equ

[国外标准] BS EN 50131-2-6-2008 Alarm systems – Intrusion and hold-up systems –– Part 2-6 Opening contacts (mag

[国外标准] BS EN 50131-2-5-2008 Alarm systems – Intrusion and hold-up systems –– Part 2-5 Requirements for comb

[国外标准] BS EN 50131-2-4-2008 Alarm systems — Intrusion and hold-up systems — Part 2-4 Requirements for combi

[国外标准] BS EN 50131-2-3-2008 Alarm systems — Intrusion and hold-up systems — Part 2-3 Requirements for micro

[国外标准] BS EN 50131-2-2-2008 Alarm systems — Intrusion and hold-up systems — Part 2-2 Intrusion detectors —

[国外标准] BS EN 50131-1-2006 Alarm systems - Intrusion and hold-up systems. System requirements

[国外标准] BS EN 50130-5-1999 报警系统.环境试验方法

[国外标准] BS EN 50126-1-1999 Railway applications — The specification and demonstration of Reliability, Availa

[国外标准] BS EN 50121-5-2000 Railway applications. Electromagnetic compatibility. Emission and immunity of fix

[国外标准] BS EN 50119-2001 Railway applications — Fixed installations — Electric traction overhead contact lin