![]() Bicycles - Lighting and retro-reflective devices - Part 4: Lighting systems powered by bicycle generators 自行车 照明和回复反射装置 第4部分:自行车发电机供电的照明系统 |
![]() Mechanical standardization of semiconductor devices - Part 6-4: general rules for drawing outline drawings of surface mount semiconductor device packages - Dimensional measurement methods for ball array (BGA) packages 半导体器件的机械标准化 第6-4部分:表面安装半导体器件封装外形图绘制的一般规则 焊球阵列(BGA)封装的尺寸测量方法 |
![]() Glass fiber reinforced plastic products for road use - Part 1: general 公路用玻璃纤维增强塑料产品 第1部分:通则 |
![]() Proton Exchange Membrane Fuel Cells Part 2: general Specifications for Cell Stacks 质子交换膜燃料电池 第2部分:电池堆通用技术条件 |
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