| 1. | The 100 billion stars of this galaxy are chiefly located in two spiral arms that extend from the nucleus .
这个星系所属的1000亿颗恒星主要分布在从核心伸展出来的两条旋臂上。 |
| 2. | Stars are born in these interstellar clouds, which are located in the spiral arms of our milky way galaxy
在我们银河系里，恒星就是在位于银河系旋臂上的这种星际气云中产生的。 |
| 3. | Hence the arms will not be able to survive
旋臂为甚么仍能存在呢？ |
| 4. | Inland navigation vessels - swing derricks
内河航运船只.旋臂起重机 |
| 5. | Inland navigation vessels - swing derricks ; german version en 1255 : 1995
内河航运船只.旋臂起重机 |
| 6. | Stationary slewing crane pilaster jib crane
壁柱式旋臂起重机 |
| 7. | Heavy - duty slewing crane
重型旋臂型起重机 |
| 8. | Wall creeper type jib crane
墙装旋臂吊车 |
| 9. | Laminated jib crane
叠臂式旋臂起重机 |
| 10. | Slewing portal crane
旋臂转柱起重机 |
