自行车 中轴
Cycles-Bottom bracket assembly

2018-05-08

Cycles — Screw threads used in bottom bracket assemblies
循环——底部支架组件中使用的螺纹

1989-12-14

Cycles-Specification for screw threads used in bottom bracket assemblies
循环 底部支架组件用螺纹规范

1990-11-30

Cycles. Bottom bracket shell dimensions (ISO/DIS 13652)
循环 底部支架外壳尺寸（ISO/DIS 13652）

1993-10-05

Skirts for apparatus - Part 2: Bottom ring with bracket supports or twin ring with webs
仪器用裙板.第2部分:带支架的底环或带腹板的双环

2016-08-01