间隙

Nowadays, the switches which are being studied or applied, such as gas spark gap, thyratron and ignitron, etc, are of different structures, operating principles, advantages and disadvantages, and are applied in various situations and fields.

目前处于试验中或者投入实际应用的开关元件很多，如火花放电间隙、闸流管、引燃管等，它们有不同的结构、原理和优缺点，应用在不同的场合和领域。

Compared with other gas discharge switches, such as gas spark gap, vacuum switch, hydrogen thyratron and ignitron, the parameters of PSS, such as hold-off voltage, peak current, rate of current rise, lifetime, time delay, jitter, have been greatly improved.

伪火花开关与其它气体放电开关如高气压火花间隙、真空开关、氢气闸流管及引燃管等相比，开关的各项参数如耐受电压、峰值电流、电流上升陡度、寿命、时延和抖动都有了较大改善。

An analytical model was built up on the jet deflection in the crossflow by applying the theorem of momentum, which takes full account of mixing between the upstream fluid and burner jet, and of the total pressure difference between the two sides of the jets. Through analysis of this model, experimental study and numerical simulation, effects of the nozzle spacing ratio, width of the furnace corner, width of the nozzle and imaginary circle diameter on the aerodynamic field in the furnace were obtained.

本文综合考虑了炉内旋转气流与燃烧器射流的混合和燃烧器射流向火侧与背火侧的全压差等因素，应用动量定理建立了横向气流中射流偏转的分析模型，并结合冷态模化试验和数值模拟计算，得到了燃烧器间隙率、炉膛切角、喷口宽度和假想切圆直径等因素对炉内空气动力场影响的规律。

Either of the sides of an arch, curving down from the apex to an impost.

顶点处有一块空白的拱；这个间隙通常充满了装饰品。

"My wife always chatters during kiss, it's really annoying.""My girlfriend always mentions something without any importance. It's a killjoy." More than one man has ever complained about the inattentiveness during kiss.

"我妻子喜欢接吻的间隙跟我聊东聊西的，这让人觉得没意思透了"；"我和女友接吻时，她会突然说起一件与此毫不相干的事情来，特别煞风景"，不止一个男子抱怨女性的"一心二用"了。

The simulation experiments of various kinds of electrode system under different pressure show that the gas inceptive when the gap is fixed, discharge voltage is proportional to the pressure; because the degree of uniformity of electrical field is different among the electrode systems, the changing trend of the inceptive discharge voltage with the pressure is unlikeness.

对各种电极在不同压力下进行模拟实验，实验表明：通常情况下，给定间隙，气体的起始放电电压随着压力的增大而增大；不同的电极系统，由于电场的均匀程度不同，起始放电电压随压力变化的趋势也不同。

Objective To study the clinical curative effect of superior central incisor diastema restored with Esthet-X.

目的 研究Esthet-X复合树脂修复上颌中切牙牙间隙的临床效果。

From the viewpoint of electric field for the fist time, a simplified model is developed of electric field distortion induced by corona charge drift.

本文从间隙中电场分布出发，首次提出了电晕放电形成的空间电荷对电场畸变的简化模型。

A series of theoretical and experimental studies on the microstrip patch antennas with dielectric superstrates is carried out systematically. Firstly, a comprehensive survey of the microstrip antenna technology and its theories are presented. Then, two analysis techniques, named as the spectral domain Green's function method and the spectral domain integral equation method are developed. The SDGF method is a simplified analysis technique, which takes advantage of the spectral domain immittance approach to find the dyadic Green's function for the stratified media, and obtains the complete closed-form formulas for radiation patterns, directivity, efficiency, gain etc. Some interesting calculated results are presented. The SDIE method is capable of determining resonant frequency, radiation characteristics, input impedance etc, for the covered microstrip patch antennas. Comparing with other full-wave analyses it reduced computation and mathematical labour remarkably. The singularities near the pole location of the surface-wave modes and the difficulty of the integral computation over infinite range of oscillating integrands are dealt with actively and documented well. Results predicted by the SDIE method agree extremely well with our experimental results for resonant frequencies of various superstrates. The superstrate effects on impedance and radiation characteristics also have been investigated experimentally so that the gap due to lack of measured data and computed results for multi-layered superstrate has been filled to some degrees and two useful observations have been achieved for weakening the resonant frequency shift and optimizing the microstrip antenna gain. As a meaningful application, the design and analysis of a 4×4 patch array are introduced.

实用微带天线普遍加介质覆盖层来防护热，物理损伤和环境影响，也可能在飞行或严酷气候条件下自然形成覆盖层本论文对带介质覆盖层的微带贴片天线系统地作了一系列理论和实验研究首先，对微带天线技术和理论作了全面的综述然后，发展了两种分析方法，称为谱域格林函数法和谱域积分方程法SDGF法是一种简化的分析技术，它利用谱域导抗法来求得分层媒质的并矢格林函数，并得出方向图、方向性系数、增益等参数的完整的闭式公式，给出了一些令人感兴趣的计算结果SDIE法能确定介质覆盖微带天线的谐振频率、辐射特性和输入阻抗等与其它全波分析方法相比，它明显减小了计算量和数学工作量已有效地处理了表面波模极点附近的奇异性和对振荡的被积函数的无限区间积分计算的困难对于不同覆盖层情况下的谐振频率，由SDIE法所预示的结果与我们的实验结果吻合得很好对于覆盖层对阻抗和辐射特性的影响也已作了实验研究这在某种程度上填补了缺少实验数据和计算结果之间的间隙，并得出了缓解谐振频率偏移和优化天线增益的两点有用的结论作为有意义的应用，介绍了一个4×4元矩形贴片天线阵的设计和分析。

INA's MOTOMAK plant in Ingolstadt works hard on the development of hydraulic valve lash adjustment elements.

职训局的MOTOMAK英戈尔斯塔特工厂努力开发的液压阀间隙调整的内容。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。