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GB/T 15972.47-2021
光纤试验方法规范 第47部分:传输特性的测量方法和试验程序 宏弯损耗
Specifications for optical fibre test method—Part 47:Measurement methods and test procedures for transmission characteristics—Macrobending loss
GB/T 7925-2021
NC reciprocating traveling type wire electrical-discharge machines—Parameters
GB/T 40116-2021
箔片轴承 气体动压径向轴承性能 静态承载能力、摩擦因数和寿命测试
Foil bearings—Performance of hydrodynamic gas journal bearings—Testing of static load capacity, friction coefficient and lifetime
GB/T 35205.5-2021
越野叉车 安全要求及验证 第5部分:伸缩臂式叉车和集成式人员工作平台的连接装置
Rough-terrain trucks—Safety requirements and verificaiton—Part 5: Interface between variable-reach truck and integrated personnnel work platform
GB/T 15242.3-2021
液压缸活塞和活塞杆动密封装置尺寸系列 第3部分:同轴密封件沟槽尺寸系列和公差
Dimensions series of rod and piston dynamic seals for hydraulic cylinders—Part 3:Dimensions and tolerances of groove for co-axial seals
GB/T 6577-2021
Types, dimensions and tolerances of groove for seals with bearing rings for hydraulic cylinders piston