GB/T 18717.2-2002
用于机械安全的人类工效学设计 第2部分;人体局部进入机械的开口尺寸确定原则
Ergonomic design for the safety of machinery--Part 2: Principles for determining the dimensions required for openings for access of parts of the body into machinery
GBT18717.2-2002, GB18717.2-2002