[国外标准] JIS B1701-2-1999 Cylindrical gears for general engineering and for heavyengineering Part 2：Modules
[国外标准] JIS B1701-1-1999 Cylindrical gears for general and heavy engineering Part 1：Standard basic rack toot
[国外标准] JIS B1701-1973 英文版 Involute Gear Tooth Profile and Dimensions