查询词典 plasmas

For the evolution of the forward density front of water-plasmas, it is found that the density front moves with supersonic speed at the beginning, as predicted by a hydrodynamics simulation.

此外在研究水等离子体在激光方向的前向动力学演化过程中发现，在早期等离子体密度波前以超声速运动，这和理论模拟一致。

The application of polar coordinates system in the CNC LATHE-MILLING;2. A fast particle-moving algorithm for particle-in-cell simulation of plasmas in polar coordinates system was proposed, in which the local rectangular coordinates approximation was used in the area near the position of the charged particle at every time step.

提出了一种在极坐标系下快速推进带电粒子的等离子体粒子模拟算法，该算法在每个时间步长内对带电粒子位置附近的区域采用局部直角坐标系近似，并通过坐标变换，得到粒子运动方程求解的显式格式，从而避免了极坐标系下隐式格式直接迭代求解所带来的容许误差，并提高了计算效率。

Thermal plasmas have electrons and the heavy particles at the same temperature ie they are in thermal equilibrium with each other.

热等离子体的电子和重粒子在同一温度即他们在热平衡与对方。

Two assigned INR plasmas were studied as quality control alternatives of reference thromboplastin and compared in parallel.

结果 12家中有4家日常使用的平均正常凝血酶原时间明显偏离实测值，分别为0.8、0.9、1.0和1.8s。

On the basics of chapter three, a new scheme of photon acceleration by which the large amplitude nonlinear density perturbation excited by a finite length driving beam in plasmas is used to upshift the frequency of an ultrashort laser pulse.

第四章在第三章研究基础上，提出一种新的光子加速机制，即，利用有限长电子束激励的大振幅非线性等离子体电子密度扰动来对入射的光脉冲进行加速。

This paper introduced a magnetically confined plasma teaching experimental device. Its main frame is made up of a spherical glass vacuum discharge chamber. It can gain the direct current glow plasmas of the audio-visual.

等离子体是继固体、液体、气体之后物质的第四种聚集状态，是由大量的带电粒子组成的非约束体系，其有别于其它物态的主要特点是长程电磁相互作用起主导作用。

A simplified model which considers the partially ionized plasma as hydrogen-like ions is presented. Classical electrodynamics theory is employed to study the action of ponderomotive force on bound electron and the effect of ponderomotive force on the generation of laser plasmas. A relation between generation of laser plasma and laser wave train length is obtained.

通过建立简化的物理模型，即将部分电离的等离子体简化为类氢离子，使用经典电动力学理论，研究激光有质动力对束缚电子的作用；讨论了激光有质动力对激光等离子体产生的影响；得出了激光等离子体的产生与激光波列长度的定量关系。

Collisional interactions are often weak in hot plasmas, and external forcing can drive the plasma far from local equilibrium, and lead to a significant population of unusually fast particles.

碰撞的互动往往是在炎热的薄弱等离子体，和外部迫使可以驱动等离子体远离当地的平衡，并导致大量人口的粒子非常快。

The second part represents the physics of magnetic reconnection and flares of electromagnetic origin in space plasmas in the solar system, single and freeduan.com double stars, relativistic objects, accretion disks, their coronae.

第2 个部分描述有磁性的reconnection的物理学和在太空在太阳系里的等离子里的电磁起源的闪光，单身和freeduan.com使星，相对论性的物体，增大磁盘，他们的coronae加倍

Due to this, our goal is to develop a new method to functionalize implant surface by plasma treatment. Argon plasma removes all chemical traces such as adsorbed contaminates and impurities. Oxidation in oxygen plasmas by ion bombardment results in a dense oxide layer.

因此，本研究利用低温电浆来发展一植体表面处理技术，先以氩气电浆清洁钛金属表面，再以氧电浆让钛金属表面产生一层致密的二氧化钛层。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。