微开的

A novel V-shaped slot antenna with a small right-angle triangle of supplementary slot is presented. The slot clement is fed by an arrow-shaped terminal of a microstrip line printed on the other side of substrate, and its good impedance matching is achieved by adjusting the area of this triangular supplementary slot.

提出了一种新颖的V形微带缝隙天线，地板上开一个直角V形缝隙，在V形缝隙的顶角处附加一个小直角三角形补偿隙，通过改变三角形补偿隙面积的大小可以对天线阻抗匹配进行优化，由基片另一侧的箭形微带线终端对缝隙单元馈电。

Our process capability: Plates: FR4, High TG FR4, high CTI FR4, high frequency materials, halogen-free materials, aluminum and other low-rise Materials :2-20 layer of finished copper thickness :0.5-5 OZ finished thickness: 0.2 -6.0mm Minimum line width: 3mil Minimum line spacing: 3mil smallest shape tolerances:+/-0.1mm minimum finished diameter: 0.1mm maximum thickness aperture ratio: 12:1 wide minimum solder bridge: 4mil characters minimum line width: 5mil Minimum height of characters: 30mil Solder Mask Color: Green, black, blue, white, yellow, purple characters such as color: white, yellow, black and other surface processes: spray tin, lead-free HASL, Electroless gold plating Shuijin, OSP, chemical Shen tin, silver and other chemicals Shen Process: Goldfinger, blue gum, Blind-via/Buried-via, characteristic impedance control, rigid-flexible combination of reliability testing such as: Open / Short testing, impedance testing, solderability testing, thermal shock testing, metallographic analysis of micro-slice curvature Isoptera: 0.7% flame retardant Level: 94V-0

我们公司的制程能力：板材：FR4、高TG FR4、高CTI FR4、高频材料、无卤素材料、铝基材料等层数：2-20层成品铜厚：0.5-5 OZ成品板厚：0.2-6.0mm最小线宽：3mil最小线间距：3mil最小外形公差：+/-0.1mm最小成品孔径：0.1mm最大板厚孔径比：12：1最小阻焊桥宽：4mil最小字符线宽：5mil最小字符高度：30mil阻焊颜色：绿色、黑色、蓝色、白色、黄色、紫色等字符颜色：白色、黄色、黑色等表面工艺：喷锡，无铅喷锡、化学沉金、电镀水金、OSP、化学沉锡、化学沉银等其它工艺：金手指、蓝胶、盲埋孔、特性阻抗控制、刚柔结合等可靠性测试：开/短路测试、阻抗测试、可焊性测试、热冲击测试、金相微切片分析等翅曲度：≤0.7%阻燃等级：94V-0

This year in Feburary, small drop corporation was closure operation center freely to be installed in the round include a country 863 plans project, can be on guard effectively the small drop of sealed virus and new virus is active defence software.

今年2月，微点公司免费为开闭幕式运营中心全面安装了列入国家863计划项目、能够有效防范未知病毒和新病毒的微点主动防御软件。

This dissertation mainly analyzes the propagation characteristics of coplanar waveguide resonant-type CRLH transmission line structure based on split ring resonator and microstrip resonant-type CRLH transmission line structure based on complementary split ring resonator, and presents some novel microwave components using them.

本文主要分析了基于开环谐振器的共面波导型与基于逆开环谐振器的微带线型谐振式复合左右手传输线结构的传输特性及其在微波元器件设计中的应用，论文创新及有价值的工作主要有以下几个方面： 1。

The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.

本文的主要内容如下：1对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。

The company provides the precision electronic switch type: leaf switch,rest switch,tact switch,multi-functional switch,swing switch,slide swtich,micro switch,encoder,push key switch,toggle switch,push switch and Matched with various types of switches each series switch keycap,all type jack:2.5/3.5 phone jack,6.35 jack,DC power jack,usb/hdmi jack,AC power jack,S terminal and so on, the company provides the precision electronic connector type: FFC / FPC flat cable connector, BTOB connector, all kinds of memory card connector: Micro SD, SD, MMC, XD, MS, SM, CF card and a single all-in-one deck, etc., switches Products: Tact Switch, multi-function switch, DIP switch, key switch, button switch series, etc.

公司提供各类高品质电子开关：叶片开关、复位开关、轻触开关、多功能开关、摇头开关、拨动开关、微动开关、编码器、按键开关、按钮开关及与各类开关相配套的开关键帽；插座：2.5/3.5耳机、6.35插座、DC电源插座、USB/HDMI插座、AC电源插座、S端子等；精密电子连接器：FFC/FPC扁平电缆连接器、板对板连接器；记忆卡座：MicroSD、SD、MMC、XD、MS、SM、CF单卡及多合一卡座等。

The on-line density measurement technology with microwave has been narrated as a key part. We has deduced relations between permittivity、the load Q-factor and resonant frequency. And the electromagnetic field for closed cavity 、open cavity has been analyzed. we also discuss the design of cavity that is used in experiment、means for how to stir electromagnetic wave and choice of diameter/length ratio for cavity.

接着重点说明了微波在线密度测量原理，基于麦克斯韦方程组深入推导了微扰情况下介电常数与谐振频率，有载品质因数的关系；分别讨论了封闭谐振腔和开孔谐振腔中的电磁场以及微扰方法中所使用的谐振腔的设计及设计中激励方式、腔长/半径的选择等若干关键问题。

Anterior clinoid process and the upper margin of the optic canal were ground by using a high-speed drill according to the location of the tumor.

取下骨瓣，磨除蝶骨嵴，剪开硬膜，分开外侧裂。依据肿瘤的位置用微钻磨除前床突和视神经管上壁。

Any of various plants of the genus Commelina having blue or purplish flowers that wilt quickly.

鸭跖草属植物一种跖草属植物，开有很快就枯萎的蓝色或微紫色花

Or an array of hollow microneedles on the patch could provide microscopic funnels through the skin.

也有一种中空微针阵列形式的药用贴片，能够在皮肤上开出微通道。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。