EN ISO 5674:2009
农业和林业用拖拉机和机械设备.动力输出(PTO)传动轴的防护罩.强度和磨耗测试和验收标准
Tractors and machinery for agriculture and forestry - Guards for power take-off (PTO) drive-shafts - Strength and wear tests and acceptance criteria (ISO 5674:2004, corrected version 2005-07-01)