| 1. | Tanks . round inspection or access openings 容器.圆形检查或出入开孔 |
| 2. | Access openings 500 for boilers 锅炉的500检查口 |
| 3. | Access openings 450 450 450 450的检查孔 |
| 4. | Safety of machinery - human body measurements - principles for determining the dimensions required for access openings 机械的安全性.人体测量.人出入机器的通道开口所需尺寸的确定原理 |
| 5. | Safety of machinery . human body measurements . part 2 : principles for determining the dimensions required for access openings 机器的安全性.人体测量.第2部分:通道开口所需尺寸的测定原则 |
| 6. | Safety of machinery - human body measurements - part 2 : principles for determining the dimensions required for access openings ; german version en 547 - 2 : 1996 机械安全性.人体测量.第2部分:通道口尺寸测定原理 |