| 1. | Magnetic helicity and its implication in solarphysics
磁螺度以及在太阳物理上的应用 |
| 2. | Moisture helicity and its application in diagnostic analysis of a heavy rain in jiang - huai basin
水汽螺旋度及其在一次江淮暴雨分析中的应用 |
| 3. | This property , often called " helicity , " serves to differentiate the neutrino from its antiparticle
这种性质通常称为“螺旋性” ，可以用来区分中微子和它的反粒子。 |
| 4. | The positive storm - relative helicity center is accompany with low - level jet in 850 - hpa isobaric surface fields
通过分析我们发现了正的相对螺旋度中心与850hpa低空急流的演变过程是一致的。 |
| 5. | The change of the positive stonn - relative helicity value has reflected the severe weak tendency of rainstorm and its system approximately
相对螺旋度值的变化大致反映了暴雨及其系统的强弱趋势。 |
| 6. | Diagnoses of apparent heat source , apparent moist sink and helicity show that the severe h eavy rainfall is related with them closely
视热源、视水汽汇和螺旋度的诊断分析表明，暴雨发生与它们密切相关。 |
| 7. | On the basis of the former two - dimensions and three - components mhd numerical simulation , this paper analyses evolution of the magnetic helicity of various magnetic structures in the magnetotail
摘要在二维三分量mhd数值模拟的基础上，对地球磁尾不同类型磁结构的形成作磁螺度分析。 |
| 8. | The various initial distributions of magnetic helicity density and the transportation of magnetic helicity flux may lead to various evolutions of magnetic helicity density in the neutral sheet region , and could result in the formation of various magnetic structures
不同的初始磁螺度密度分布和磁螺度通量输运，可以引起中性片区域磁螺度密度分布的不同演化，从而导致具有不同拓扑位形磁结构的形成。 |
| 9. | The results illustrate that in the driven magnetic reconnection process generated by the dawn - dusk electric field in the magnetotail , the transportation of magnetic helicity flux via the boundaries of the system is the direct cause of the change of the total magnetic helicity in the system
研究表明，对于由晨昏电场?生的磁尾驱动重联过程，通过系统边界输运的磁螺度通量是引起系统总磁螺度变化的直接原因。 |
| 10. | The result indicates that , in the course of the rainstorm in huoshan , there are obvious low - level jet of great intensity , infection of mesoscale shear line , enhancement of plus vorticity which increases intensity of convergence , improves ascending velocity and brings on precipitation , and quick enhancement of helicity which provides the basis to forecast , in addition , convergence of moisture flux and analyzed potential vorticity which reflects baroclinic convective instability sufficiently indicate the characteristics of the rainstorm
结果表明：此次霍山暴雨发生前后，存在明显的大强度低空急流，并受到中尺度切变线的影响，而且正涡度的加强引起了辐合加剧，提高了上升速度从而引起降水，同时暴雨发生前螺旋度的迅速增强，也为预报提供了根据，另外水汽通量的辐合以及分析位涡反映出的斜压对流不稳定都充分体现了这次降水的特点。 |
