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(原版 PDF): IEC 60255-21-1 Ed. 1.0 Electrical relays - Part 21: Vibration, shock,

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Post time 2011-5-30 16:13:09 | Show all posts |Read mode

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(原版 PDF): IEC 60255-21-1 Ed. 1.0
Title: Electrical relays - Part 21: Vibration, shock, bump and seismic tests on measuring relays and protection equipment - Section One: Vibration tests (sinusoidal)
Publication date:1988-09
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Post time 2015-6-23 11:51:41 | Show all posts
may i download it?
Post time 2020-5-13 04:05:17 | Show all posts
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