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SJ 1620-1980 Pulse modulator tubes,Type TM-90(J)
Issued on: 1980-07-18   Implemented on: 1981-1-1 Price(USD): 105.0 Delivery: via email in 1~3 business day

GB 1982-1980 Fundamental parameters and general requirements of audio frequency power amplifier(megaphone)
Issued on: 1980-07-01   Implemented on: 1981-1-1 Price(USD): 60.0 Delivery: via email in 1~3 business day

GB/T 1989-1980 Methods for indication of the 7-bit encoding character set for information processing switching on 12.7mm magnetic tape
Issued on: 1980-07-10   Implemented on: 1980-12-1 Price(USD): 30.0 Delivery: via email in 1~3 business day

Totally 3 standards related
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