| 1. | Perhaps there is a metal ring, and the ring has to go on a tube .
也许有一个金属圈必须套在一根管子上。 |
| 2. | Wooden barrels and water tanks are usually strengthened with metal bands .
木桶和水箱通常用金属圈来加固。 |
| 3. | He made the rope fast to the metal ring
他把这根绳子紧系在金属圈上。 |
| 4. | He made the wire fast to the metal ring
他把这根铁丝紧系在金属圈上。 |
| 5. | Full aperture with high precision
全孔径金属圈 |
| 6. | Eyelets for canvas
帆布传送带用小金属圈 |
| 7. | The cylinder and bands may be examined by a spectator before the drum is formed
在组装鼓之前圆筒和金属圈都可以被观众检查 |
| 8. | Two metal bands are used to secure tissue paper in place to form a drum an enchanted drum
两个金属圈用来把两张纸巾蒙在鼓上形成我们的魔法制造鼓 |
| 9. | Heat the metal coil in the burner flame , then plunge it into the liquid on the watch glass
在火炉的火焰中加热金属圈，然后将其投入观察玻璃上的液体中。 |
