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MGM is introduced to solve field distributions in 3-D electron optical systems. The difference equation, the discrete form of Laplace's equation, is deduced in 3-D Cartesian coordinates. In view of the smooth effect, MGM combines Gauss-Seidel iteration with a technique known as coarse grid correction. Formulae for restriction and prolongation are deduced and expressed in terms of tensors.

将多重网格法引入电子光学系统中三维静电场的计算，对三维笛卡尔坐标系中的差分方程，采用高斯-赛德尔迭代法求解差分方程组，并结合迭代过程讨论了粗网格的误差校正技术；在不同网格层之间进行场值的限制和延拓，推导了三维静电场中的限制、延拓公式并以张量的形式表示。

In the draught of fact demands, the application of fault diagnosis become more and more abroad, has filted into the Mechanics and Electronics system, Industry Automatization system, computer system, and all kinds of dynamic system in abroad way, including abjection identify system, combination navigation system and so on from traditional machine system and electron system.

在实际需求的牵引下，故障诊断技术的应用越来越广泛，论文网，已经从传统的机械系统和电子系统，渗透到机电一体化系统、工业自动化系统、计算机系统，以及各种广泛意义上的动态系统，包括目标识别系统、组合导航系统等。

In the draught of fact demands, the application of fault diagnosis become more and more abroad, has filted into the Mechanics and Electronics system, Industry Automatization system, computer system,发表论文, and all kinds of dynamic system in abroad way, including abjection identify system, combination navigation system and so on from traditional machine system and electron system.

在实际需求的牵引下，故障诊断技术的应用越来越广泛，已经从传统的机械系统和电子系统，渗透到机电一体化系统、工业自动化系统、计算机系统，以及各种广泛意义上的动态系统，包括目标识别系统、组合导航系统等。

The PTK mode of excimer laser was used to ablate retinal sheet.Total 48 photoreceptor sheets were ablated with three depths and were studied by light and scanning electron microscope.

目的 探讨PTK切削方式下，准分子激光切削视网膜制备理想感光细胞片层所需的最佳切削深度。

Start-oscillation current will be down by absolute instability of TE02 and TE01 modes and electron velocity ratio and interaction section, it can be suppressed by the distributed wall losses.

模拟结果显示，TE02、TE01模式绝对不稳定的引发使得原有操作电流降低，其起振电流明显受电子速率比、作用段长度的影响，但此模式可藉由损耗来抑制，此结论与线性理论结果一致。

Quantum transition which causes the changes of the magnetopolaron lifetime is occurred in the quantum system due to the electron-phonon interaction and the influence of external temperature which is the magnetopolaron leap from the ground state to the first-excited state after absorbing a LO-phonon.

由于电子-声子相互作用和外界温度的影响导致了量子体系的跃迁，即磁极化子吸收了声子的能量由基态跃迁到激发态，造成极化子在基态的寿命发生变化。

The effects of electron energy on spectral reflectanc e and solar absorptance are analyzed.The results are discussed relative to the change in spectral reflectance in the near infrared wavelength region.

分析了电子能量对光谱反射系数和太阳光谱吸收系数的影响，并对红外区光谱反射系数的变化结果进行了讨论。

The particle size and distribution were determined by transmission electron microscopy and laser particle size distribution analyzer, ultraviolet-visible absorption curve was also characterized.

通过透射电镜、激光粒度分布仪等测定了纳米颗粒的粒径和分布情况，并对纳米金溶胶的紫外可见吸收曲线进行了研究。

In addition, the curve of terahertz absorption coefficients can be fitted by a straight line with a slope of 1.92. From the results of scanning electron microscope, the ranges of inner diameter and outer diameters of the sample were from 5 to 15 nm and from 15 to 25 nm, respectively, and its length was in the order of micrometer.

检测结果显示，在0.2～2.0 THz内，样品折射率随着频率的增加而减小，吸收系数却随着频率的增加而增加，并可以拟合斜率为1.92的直线；样品的内径为5～15 nm、外径为15～25 nm，且长度达到了微米级，样品含C量大约为94%，其他为O和Cl杂质元素。

This course offers a basic understanding on morphology structure and function, the injury on crop of Acari by light microscopy and scanning electron microscopy practical operation.

本实习目的，让学生利用光学显微镜及扫瞄式电子显微镜认识基本之蟎蜱外部形态构造及功能，与观察蟎类对重要经济作物的为害特徵。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。