| 1. | The polynucleotide chain is helical .
多核苷酸键是螺旋形的。 |
| 2. | In a globular protein, certain portions of the chain are coiled into helical segments .
在球状蛋白中，链的某些部分被盘成螺旋状。 |
| 3. | Two types of viral symmetry have been recognized, the cubical symmetry and helical symmetry .
已经证实病毒有两种对称型，即立体对称和螺旋对称。 |
| 4. | W is attached to a bar, movable vertically around an axis a and suspended by the helical spring f .
摆锤W装在一根杆上，在轴A周围垂直移动，它由螺旋弹簧F所悬挂。 |
| 5. | Hot coiled helical springs - technical specifications
热卷圆柱螺旋弹簧技术条件 |
| 6. | Slopping floor with express helical down ramp
斜面楼地板附设螺旋状快速下楼匝道式 |
| 7. | Design guide for vehicle spur and helical gears
车辆正齿轮和斜齿轮的设计指南 |
| 8. | 60si2mn steel helical springs metallographic test
60si2mn钢螺旋弹簧.金相检验 |
| 9. | Hot coiled helical springs - technical specifications
热卷圆柱螺旋弹簧技术条件 |
| 10. | Osem - based helical half scan reconstruction
基于有序子集期望最大化的螺旋半扫描重建 |
