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等离子体

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The vacuum vessel as an ultrahigh vacuum pressure vessel is one of the important components of the EAST device, providing high quality vacuum conditions for the plasma discharge, which will affect greatly all kinds of plasma parameter.

EAST真空室作为超高真空压力容器是EAST超导托卡马克核聚变实验装置的关键部件之一,是等离子体放电的直接场所,其获得的真空度质量直接影响装置运行时等离子体的各项基本物理参数。

As to concrete treating method, the thesis adds the components in third dimension to the original 2D MHD code, and inward flows are embedded along the side of the current sheet, through changes of certain flow's scale, its distance to the current sheet, the viscosity coefficient and the resistivity in the plasma, the magnetic field figure, the velocity vector figure and the density distribution figure with different situations would be showed and observed, the reconnection growth rate figure is to be presented also, and the physical explanation involved will be made consequently.

在具体的处理方法上,文章在原有二维MHD流体理论基础上加入第三方向的分量,并且在电流片两侧加入入流扰动,通过改变其大小,距离电流片的位置,等离子体中的粘滞系数和等离子体电阻率,从而观察不同扰动情况下磁场重联的磁场位形、流场位形或者密度分布,绘制出磁场重联增长率在不同入流扰动下的图像,并分析其中的物理过程。

The propagation of electromagnetic pulses in uniform magnetized plasma is studied using the finite-difference time-domain method by means of Z transforms. The Z transform formulation of FDTD method is derived.

通过Z变换的方法,将与频率有关的磁化等离子体的介电常数由频域变换到Z域,推导了Z变换形式的时域有限差分法计算式,模拟了电磁脉冲在磁化等离子体中的传播。

Secondly, the pulse discharge plasma with allylamine was discussed, and the modification results with two kinds of discharge models were compared. The results showed that discharge models had influences on the plasma treatment results, especially under lower pressure and higher temperature with pulse discharge. The nitrogen element content in the layer under the pulse discharge was obviously lower than that under the continuous discharge, but there was higher proportion NH〓 groups remaining in the layer under the pulse discharge. The sample surfaces obtained by pulse discharge also had good biocompatibility.

其次讨论了脉冲放电模式下丙烯胺单体的等离子体修饰,比较了两种放电模式对修饰结果的影响,研究结果显示,放电模式对表面修饰层的结果有一定的影响,其中脉冲放电对低压及高温两等离子体条件下的影响尤为明显;脉冲放电下所得到的修饰层中的氮元素含量明显低于连续放电模式下,而脉冲放电下有较高比例NH〓基团保留在修饰层中;脉冲放电所得到的表面修饰层同样有较好的生物相容性。

in order to improve the anticoagulation of biomedical stainless steel, we fabricated the plasma-polymerized allylamine films on the surface of the biomedical stainless steel by pulsed plasma polymerization technique, and then immobilized the molecules of bovine serum albumin on the polyallylamine films.

采用脉冲射频等离子体聚合技术,在医用不锈钢表面制备了等离子体聚烯丙胺薄膜,并进一步在聚合薄膜表面固定白蛋白分子。

Particle heating in plasma jets was studied by computation, and some applicational studies of AlN have been made.

用数值计算方法模拟了颗粒在等离子体中的加热,并且对铝粉在等离子体中的加热和氮化铝的一些应用特性进行了实验研究。

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。

An experiment on DC arc plasma ignitor which was made by ourselves was carried on to research jet characteristic, in which the influence of voltage was excluded by keeping the DC output voltage of plasma power at 24V.

对自行设计的直流电弧等离子体点火器进行射流特性实验,其中等离子体电源直流输出电压保持24V不变,排除电压的影响。

Due to the remarkable progress in ultra-short laser science, many important laser applications have been performed, for example, high-energy physics, laser-produced plasma, high-field physics, plasma accelerator, X-ray laser and"fast ignitor"in inertial-confinement fusion.

超短脉冲激光技术的这些突破性进展不但为超高能量密度物理、激光等离子体物理、强场物理、等离子体加速器及X射线激光等研究领域提供了全新的实验手段,也为惯性约束核聚变开辟了新的&快点火&技术途径。

Last, the Eigenenergies of isoelectronic series change against screening parameterλhas been discussed, it's shown that the plasma screening effects are decreasing as nuclear charge increasing.

最后,我们分析了等离子体环境中类氢等电子序列离子的能级和波函数随屏蔽参数λ的变化规律,发现随着原子序数增大,等离子体屏蔽效应的影响逐渐变小。

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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发,分析对称连杆曲线上鲍尔点的产生条件,提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品,年生产总值3000万美元,产品价廉物美、选料上乘、质量保证,深受国内外客户的青睐

The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.

血精的原因很,以良性病变为主。