| 1. | The float is a direct acting float switch
这个浮球是一个直接作用的浮控开关。 |
| 2. | Direct acting pressure reducing and pressure restricting valves
直接控制的减压阀和压力控制阀 |
| 3. | Direct acting electrical measuring recorders
直接动作电测量记录仪 |
| 4. | Direct acting recording electrical measuring instruments and their accessories
直接记录电气测量仪表及其附件 |
| 5. | Direct acting recording instrument
直流作用记录仪 |
| 6. | Direct acting reducing valve
正向作用式减压阀 |
| 7. | Direct acting recording electrical measuring instruments and their accessories
直接作用的记录用电气测量仪器及其附件 |
| 8. | Direct acting steam pumps for nomenclature , definitions , application , and operation
蒸汽直动活塞泵.术语定义应用和操作 |
| 9. | Direct acting instrument
直接作用仪表 |
| 10. | Direct acting hoist
直接传动提升机 |
