查询词典 cavity

The fidelities of quantum states of system in Jaynes-Cammings model considering the dissipation of cavity were studied by using the complete quantum theory.The influences of the cavity damping constant and the numerical value of initial mean photon number on the fidelities of quantum states was discussed.

利用全量子理论研究了存在腔耗散的大失谐 Jaynes-Cumming 模型中量子态保真度，讨论了初始平均光子数一定的情况下腔的耗散系数对量子态保真度的影响，以及当腔的耗散一定的情况下初始光场的平均光子数对量子态保真度的影响。

Celiac lens gallbladder is excised is to be in lens of TV abdominal cavity is orthoptic below, use special weapon or enter through celiac wall small cut cystic resection applies inside abdominal cavity, do not have a stomach, scar is little, anguish is small, complication is little, operation time is short, restore to wait for an advantage quickly, now already by clinical and wide application.

梗概： 腹腔镜胆囊切除是在电视腹腔镜直视下，利用非凡器械或通过腹壁小切口进入腹腔内施行胆囊切除术，具有不开腹，创伤小，痛苦小，并发症少，手术时间短，恢复快等优点，现已被临床广泛应用。

Results Among these cases,the main CT features of the tympanic cholesteatoma included:soft tissue density tumor shadows in the tympanic sinus and cavity;bone destruction;sclerosis of the bone borders of tympanic sinus and cavity;destruction and shifting of the auditory ossicle chain.

结果 该组病例中，胆脂瘤性中耳炎的CT主要表现有：中耳窦腔内软组织密度瘤影；骨质破坏；中耳窦腔骨缘硬化；听小骨链破坏、移位。

This item is a new type structure direct-acting overflow valve, which adopts dynamic pressure feedback principle. That is it adds a feedback cavity on common direct-acting overflow valve's core. When there is overfall on valve port, the hydraulic force of valve port will balance with feedback cavity's hydraulic force and spring force, so it can decrease spring's stiffness, just like adding a hydraulic spring, which works together with mechanical spring, so as to minish valve port pressure range.

本项目是一种新型结构的直动式溢流阀，采用动压反馈原理，在普通直动式溢流阀阀芯上增加一反馈腔，当阀口溢流时，阀口的液压力与反馈腔液压力和弹簧力相平衡，从而可以减小弹簧的刚度，等于增设了一根液压弹簧，使其和机械弹簧一起工作，以达到减小阀口压力变化范围的目的。

ABSTRACT: This design elaborated the patch cord plank outer covering plastic parts injection mold design process, including the cavity quantity and deciding the arrangement of the cavity, selecting the machine for injection, the feed system design, choosing the molding boards and their standardized parts, design core-pulling outfit and formed accessories and so on, the basically design flow and the process of injection-mold design based on Pro/E was illustrated.

摘 要：本次设计阐述了插线板外壳塑料零件的注射模设计过程，包括型腔数量和布局的确定、注射机选择、浇注系统设计、模板及标准件的选用、脱模及抽芯机构的设计、成型零件的设计等，阐述了采用Pro/E进行注塑模具设计的基本流程以及模具各部分结构的设计过程。

Socket products usually have complicated cavity, over the process analysis to plug part, the forming problems in special-shaped cavity forming, normal demoulding and large amount of piercer forming are solved successfully.

插座类制件往往具有很复杂的内腔，通过对插座制件进行工艺分析，成功解决了异型内孔的成型和顺利脱模以及大量的成型碰穿孔的成型问题。

By controlling the size of pump beam and inserting an intracavity aperture in the plano-concave cavity, we obtain good contrast optical bottles at semi-confocal, 1/3-, and 1/5-degenerate cavity configurations, respectively.

只要适当的控制泵浦光斑与腔内实光栏的大小，在半共焦腔、1/3简并腔、与1/5简并腔下可以产生不同但是对比度极佳的瓶型光束。

Under the condition of small angle misalignment, the effecton output beam's near-field distribution of CO2 lasers with two-dimensional axisymmetric-fold combination cavity was ascertained after analyzing and simulating beams combination output based on the axis determination of misaligned plano-concave and concave-plano-concave cavity resonator.

为了研究小角度失调对二维轴对称－折叠组合腔CO2激光器输出光束的近场分布的影响，在利用矩阵理论确定平凹谐振腔和凹－平－凹谐振腔失调后的光轴的基础上，采用光束并和思想，对输出光束进行了理论分析和模拟。

Since the Q-factor depends on the cavity substrate loss and matching conditions, we could design oscillators on different substrates with different Q-values of SIW cavity resonators.

由於品质因素取决於谐振器的板材损耗与匹配电路，因此我们可以在不同板材上制作振荡器以获得具有不同品质因素的设计。

By considering this effect,the realizability and the stability of the cavity can be improved, when a high power and asymmetric laser cavity is considered.

利用激光谐振腔的此性质可以对Kerr被动锁模激光器的谐振腔的设计进行优化，从而提高其锁模的可实现性以及谐振腔的稳定性。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。