YD/T 958-1998
Digital subscriber signalling system No.1 (DSS1). signalling specification for frame mode basic call control 1号数字用户信令系统(dss1)帧方式基本呼叫控制信令技术规范 |
GB/T 6594.1-1998
Polystyrene (PS) moulding and extrusion materials--Part 1:Designation system and basis for specifications 聚苯乙烯(PS)模塑和挤出材料 第1部分:命名系统和分类基础 |
YD/T 974-1998
specifications and Measurement Methods for SDH Digital Cross Connect Equipment (SDXC) sdh数字交叉连接设备(sdxc)技术要求和测试方法 |
SJ 20721.1-1998
Detail specification for micro-presure transducers for CGY-YZ-001 cgy-yz-001型微压传感器详细规范 |
SJ 50601/1-1998
Detail specification for low temperature thermistors for type MF5602 and MF5604 mf5602型、mf5604型低温热敏电阻器详细规范 |
SJ 51931/8-1998
Detail specification for type P2KBH PQ20×16 PQ26×25 PQ32×30 cores r2kbh pq20×16 pq26×25 pq32×30 型磁芯详细规范 |
SJ 20697-1998
General specification for IFF/ATC airborne interrogator-transponders 敌我识别和空中交通管制(iff/atc)机载询问应答机通用规范 |
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