| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| SJ 2011-1982 | English | 439 |
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Days<=4
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O-type backward wave oscillator tubes, Type BB-109 and 109A
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SJ 2011-1982
| Obsolete |
SJ 2011-1982
|