周期带

In the program, on theoretically we have studied the effects of configuration, the arranged periodic length and the refractive index ratio on PBG using finite difference time dormain method; on experimental, we have synthesized monodispersed silaca microspheres with size of 150-320 nm by colloidal chemical methods. And 3D perfect photonic crystals were prepared using the evaporating of acetone self-assembling the monodispersed SiO2 microspheres on quartzes by and horizontal and vertical deposition methods.

在本项目的研究中，理论上我们应用有限时阈差分法研究了光子晶体光子带隙形成与空间构型、排列的周期长度及折射率比之间的关系；实验上，我们应用胶体化学方法制备了150-320 nm的SiO2胶体微球，以丙酮为挥发溶剂，通过水平重力沉积法和垂直自然吸附法制备了各种粒度、排列完美的面心立方光子晶体。

Finished 0.5PITH FPC automatic detection machines, automatic feed from the vacuum tube, CCD, Good choice of fully automated non-performing products, KEYENCE CV3500 machine vision system using detection (with 17-inch color display), Yamaha manipulator, SMC pneumatic components, PLC control, PROFACE monochrome touch-screen operation, high degree of automation cycle 1.5S

0.5PITH FPC成品自动检测机，从真空管自动进料，CCD，良品不良品选择全自动化，该机采用KEYENCE CV3500视觉系统检测（带17吋彩色显示器），亚马哈机械手，SMC气动元件， PLC控制，PROFACE单色触摸屏操作，自动化程度高，周期1.5S

Automatic detection 0.5PITH FPC finished packing machine, automatic feed from the vacuum tube, CCD, conduction, voltage detection, Good choice of non-performing products, fully automated SMT packaging, machine vision system KEYENCE CV3500 use of detection (with 17-inch color display ), Yamaha manipulator, SMC pneumatic components, Mitsubishi FX2N PLC control, PROFACE color touch-screen operation, high degree of automation cycle 1.5S

0.5PITH FPC成品自动检测包装机，从真空管自动进料，CCD，导通，耐压检测，良品不良品选择，贴片包装全自动化，该机采用KEYENCE CV3500视觉系统检测（带17吋彩色显示器），亚马哈机械手，SMC气动元件，三菱FX2N PLC控制，PROFACE彩色触摸屏操作，自动化程度高，周期1.5S

Quasi-single field reflective scanning method.

钢带用做刻线模板，其刻线周期为200 m。

A relativistic Cherenkov source with slow wave system consisting of modified photonic band-gap cells is proposed and investigated.

提出了一种变态光子带隙结构，研究了由这种结构构成的周期慢波系统的Cherenkov辐射源的特性。

Using a systematic approach and the concept of ＂pure HOLZ case＂ for electron diffraction,the convergence of the conventional multislice methodand the second-order multislice methodfor calculating higher-order Laue zoneeffects was studied.

高能入射电子与样品的体周期较长，或当晶体较大地偏离带轴时，HOLZ衍交互作用是一个复杂的电子弹性和非弹性散射过射束都会有较大的强度，此时，HOLZ衍射不能忽程。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失