| 1. | Machine tools - direction of operation of controls 机床.控制器的操作方向 |
| 2. | Machine tools - direction of operation of controls 机床控制装置的操作方向 |
| 3. | Direction of operation of machine tool controls 机床控制装置的操作方向 |
| 4. | Machine tools ; direction of operation and arrangement of controls 机床.操作方向和控制器的排列 |
| 5. | Directions of operation of two - position lever , operated switches 操纵开关用两位置杆的操纵方向 |
| 6. | Aerospace ; lever - operated , two - position , on off switches , directions of operation 航空和航天.拉杆操纵的双位on off开关.操纵方向 |