GB/T 5019.7-2009
Insulating materials based on mica - Part 7: Glass-backed and film-backed mica paper with an epoxy resin binder for vacuum pressure impregnation(VPI) 以云母为基的绝缘材料 第7部分:真空压力浸渍(VPI)用玻璃布及薄膜补强环氧树脂粘合云母带 |
GB/T 2089-2009
Cylindrical coiled compression spring dimensions and parameters 普通圆柱螺旋压缩弹簧尺寸及参数(两端圈并紧磨平或制扁) |
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