查询词典 cavity

A basic theory for constructing cavity resonator with a kind of slowwave transmission lines is presented, the procedure of determining sizes of cavity for a designed resonant frequency is proposed.

分析了盘荷同轴型谐振腔的TM慢波模式，并给出TM主模特征值和谐振频率的计算方程，证明了单一的TM高次模不能作为慢波模式单独存在于这种谐振腔之中，必须由多个高次模共同组成一个谐振模式。

There are four kinds of fracture ways of 7075/SiC composite under high-temperature compression, which are the evulsions of SiC from the matrix due to forming cavity near the interface and intensive phase , ductile fracture of the matrix due to the nucleation of cavity near the interface , the fracture near SiC particulate coacervate and brittle fracture of the SiC particulate.

喷射沉积7075/SiC复合材料高温压缩时的断裂方式主要有四种，即空洞在增强相与基体界面处形成而出现增强相从基体中拔出的现象、空洞在基体中形核长大而引起基体的延性断裂、颗粒团聚处的断裂和颗粒的脆性断裂。

A coil forming block (208) on a coiler machine has a cavity (218) in which a terminal convolution of the coil is formed, and from which the coil is cut by a cutter (212) which extends into the cavity.

在卷绕机上的螺管成形模块(208)具有空腔(218)，在该空腔内形成螺管的终端旋圈，并且螺管在该空腔由深入该空腔内的切削工具(212)切断。

Two different Fabry-Perot cavities have been adopted: plane mirror cavity and confocal concave spherical mirror cavity.

采用了两种不同的Fabry-Perot腔体结构：平面腔镜结构和对称共焦球面腔镜结构；首先进行了理论分析，得出两种结构中折射率变化与干涉条纹变化的关系，然后分别对两种腔体结构下的测量系统进行实验研究，都可以探测到10-5量级的折射率变化量，结果基本令人满意。

Results There were 14 cases of tubal pregnancy (9 were located in ampullae ,4 were in interstitial trpes and 1 was in interstitial);And one cases were ovarian pregnancy.whose signs of CT were cystoid bump in the pelvic cavity,with uneven density and unclear interface with organization of surroundings, Cystoid wall or blood vessel of the part were intensified and there was no change inside the cystoid,concomitancy with hyperaemia of pelvic cavity.

结果 14例异位妊娠发生在输卵管(9例位于壶腹部，4例位于伞端，1例位于间质部)，1例发生在卵巢；CT表现盆腔囊实性肿块，密度高低不均，与周围组织分界不清，增强后囊壁强化或局部血管样强化而内部无强化，合并盆腔积血。

The cavity can be divided into two typical zones: the Rayleigh_Benard-like convection zone governed by the centrifugal buoyancy force occupying the upper cavity, and the forced convection zone governed by the inertial-force down under. These two zones interact with each other via the exchange of mass, momentum and energy.

对换热而言，流场的振荡对上游盘和盘罩的换热影响比较明显，随离心浮升力的增加平均换热增强；下游盘的换热主要受流体冲击的影响，随惯性力的增加平均换热增强。

In order to achieve a tradeoff between vectoring and unvectoring state, the proposed parameters of DTN are: Z=3~4, secondary injection flux is about 3%, cavity divergence angle is about 10°, cavity convergence angle is 20°~30°, injection angle of secondary is about 30° by counterflow injection.

为了实现DTN在推力矢量和非推力矢量下都有较好的内流综合性能，所建议的设计参数为：落压比为3~4，引射量为3%，凹腔扩张角为10°左右，收敛角在20°~30°，引射角度为30°逆流引射角(β=30°)。

To verify the new approach, an open-ended empty rectangular cavity and cavity loaded with a metal cuboid are analyzed. The numerical results are in agreement with the published data and those obtained by FDTD. Good convergence behavior is observed.

为了验证理论模型的正确性，该文对某一矩形空腔及底部加载金属台阶的腔体进行了分析，计算结果与文献数据以及用时域有限差分法所得结果一致，并具有很好的收敛效果。

On IOPO,for high-power pumped KTP OPO in Nd:YAG laser(Q-switching and Xe-lamp pumped)cavity,convert efficiency up to 45% is measuredfor both linear and T-shape structure with various cavity mirrors.

脉冲宽度太宽，泵浦功率密度上升的较慢，参量光的增益较小，信号光建立时间就会被延迟，也不会获得较高的转换效率。

We experimentally demonstrate that the output power of spontaneous emission in degeneracy cavity is larger than in non-degeneracy cavity.

我们在实验上也证明了在简并腔位置自发辐射的输出功率会比非简并腔位置高。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。