precipitation particles

The EISCAT data are used to confirm the important role of precipitation particles in the ionization rate in the auroral region.

本文从ＥＩＳＣＡＴ探测资料分析确认，沉降粒子对极光区电离层的电离生成率有极重要的作用，但高能和低能粒子的有效电离高度范围完全不同，另一方面，磁层对流的增强却常使Ｆ层电子密度Ｎ下降，１９８５年１月２８～２９日期间出现Ｎ（Ｅ层）Ｎ（Ｆ层），且１４７ｋｍ以上Ｎ随高度增加而下降的典型扰动剖面。

A simulation study on the effects of particle precipitation on the polar ionosphere was carried out in this paper.

利用一维自洽的时变极区电离层模型,研究极隙区极光粒子沉降对极区电离层F层电子密度影响的时变过程。

They are auroral oval phenomena,FLIZ phenomena,slant Es phenomena and lacuna,F region magnetic noon phenomena,and particle precipitation effects in the E region.

由于中山站处在极尖区附近这样一个特殊位置，所以这些电离图能显示出大多数高纬现象，诸如极光卵现象、ＦＬＩＺ（Ｆ层不均匀区）现象、倾斜Ｅｓ和空白现象、Ｆ区磁纬中午现象、Ｅ和Ｄ区的粒子沉降效应，以及粒子Ｅ层（夜间Ｅ层）现象等。

The polar ionosphere is strongly influenced by convection electric fields, auroral particle precipitation, and field-aligned electric currents etc.

极区电离层强烈地受到极区对流电场、极光粒子沉降和场向电流等的影响。

According to the established model, the study analyzes the effect of sludge recirculation taken by suction dredge on particle setting,in horizontal sedimentation tank.

根据所得模型分析了在平流沉淀池中吸泥机带走的污泥回流量对颗粒沉降的影响。

Experimental Research and Dynamic Simulation of Sphere Motion;

圆球粒子沉降的数值模拟及实验研究

DLM/FD Simulation on the Motion of Sphere Particles in a Vertical Tube;

球形粒子沉降运动的DLM/FD模拟

Influences of solar flare bursts and partical precipitation on the lower ionosphere have been observed by means of VLF propagation effects at Zhongshan Station in Antarctica.

在南极中山站利用甚低频传播手段观测太阳耀斑爆发及极区粒子沉降对低电离层的影响。

giant particle (GP)

(核爆炸沉降物中)强放射 性粒子

Prediction of Nanoparticle Transport and Deposition in Bends

纳米粒子在弯管中的输运和沉降特性

Lattice Boltzmann simulation of particle settling and experimental validation by PIV

颗粒沉降的格子Boltzmann模拟与PIV实验验证

The slow descent of minute particles of debris in the atmosphere following an explosion, especially the descent of radioactive debris after a nuclear explosion.

放射性粒子的沉降爆炸后放射性粒子通过大气缓慢下降，尤指核爆炸后放射性粒子的下降

The rate of sedimentation of a suspended viral particle depends on its size and density.

悬浮病毒粒子的沉降率因其大小和密度而异。

Central deposition of particles is favored by rapid and shallow breathing.

轻向快速的呼吸有助于粒子的中心沉降。

SCATTERING AND PRECIPITATING OF PARTICLES OF THE MAGNETOTAIL UNDER THE ACTION OF THE DAWN-DUSK ELECTRIC FIELD

磁尾粒子在晨昏电场作用下的散射与沉降

Physiochemical Properties of the Atmospheric Aerosol Particles over the Sand-dust Source Areas and Sedimentary Areas;

沙尘源区与沉降区气溶胶粒子的理化特征

The dust particles will settle down in the short run.

尘粒不久就会沉降下来。

long range fall-out

远程(放射性)微粒沉降

Total bacterial count of air and dust particle count were measured by plate sedimentation method and GLJ-BG-type dust particle counter.

用平板沉降法和GLJ-BG型尘埃粒子计数仪分别测定了空气中的细菌总数、埃粒子数。

area of military-significant fallout

具有军事意义的（放射性）微粒沉降地区

Digital Image Discovery by Laser Scattering Rate of Settling of Particle;

沉降颗粒激光散射像点运动图像研究

Settlement Properties of Impurities in the Concentrated Wet-process Phosphoric Acid

浓缩湿法磷酸中杂质颗粒的沉降特性

The Air Particle Two Sews the Shape to Paste the Wall Jet Flow Settling of Particies Characteristics Test Research

气粒两相缝状贴壁射流颗粒沉降特性试验研究