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This article first antenna, microstrip theory, the circular polarization technology, the theoretical discussion, in this based on the microstrip antenna of circular polarization method - corner square microstrip antenna, and has done a design simulation , and then do the design and further research to improve and eventually get a resonant frequency (S11 reflection coefficient corresponding to the minimum frequency) for the 1.5GHz and 1.43GHz, the frequency of circular polarization for the 1.46GHz, S11 is less than -10dB relative bandwidth, the VSWR is less than 2 is about 8.8% relative bandwidth, axial ratio less than 3dB relative bandwidth of about 2.2% of the right circular polarization microstrip antenna design case, which proved very good the circular polarization microstrip antenna theory, also fully confirmed by a square corner design is a practical program, and select the appropriate regulation of sticks is indeed able to improve the performance of the antenna.

本文先对天线、微带理论、圆极化技术等进行了理论论述,在此基础上,提出圆极化微带天线的实现方法——切角方形微带天线,并对此做了设计仿真,后又对这一设计方案做了改进及进一步研究,最终得到一个谐振频率(反射系数S11 的最小值所对应的频率)为1.5GHz和1.43GHz,圆极化频率为1.46GHz,S11 小于-10dB 的相对带宽、驻波比小于2 的相对带宽约为8.8%,轴比小于3dB 的相对带宽约为2.2%的右旋圆极化微带天线的设计案例,从而很好的印证了圆极化微带天线理论,也充分证实了切角方形是一种切实可行的设计方案,而选取合适的调节枝则确能提高天线的性能。

Phase velocity error caused by position error of microtremor observation array is computed under different conditions such as two different dispersive phase velocity models of Rayleigh wave, three kinds of radius, 19 kinds of observation position mode and 6 types of position error.

为研究地脉动观测台阵中观测点之间的定位误差带来的影响,计算了在两种瑞利波频散模型、3种不同的圆周半径以及19种观测位置等多种情况下由6种定位误差引起的瑞利波相速度相对误差,结果表明:由于圆周上观测点数目有限,在不存在定位误差时,相速度误差也是存在的,随观测点位置的不同,相速度相对误差存在差异,其最大值约为最小值的3倍。

The frequency fluctuation of the stabilized laser is held within 5.6 MHz and better than 160 MHz of the free-running laser. The root of Allan variance of error signals reaches a minimum of 1.66×10 -11 when averaging time is 64 s, well within the precision needed for application.

稳定后的激光频率波动小于5.6MHz,相对于自由运转时的160MHz有了很大提高,而误差信号的Allan方差均方根在平均积分时间为64s时达到最小值1.66×10-11。

Keyboard code location relative speed equivalence; Returning to one for minimum value; Time relative value.

关键字]键位相关速度当量;最小值归一;时间相对值

This paper establishes mathematical models of unsteady and Non-Darcy low speed flow through the porous media and the double porous medium, and has obtained their solutions in an infinite reservoir through Laplace transformation, and their long time asymptotic solutions has been worked out, solutions on a bounded reservoir has also obtained through finite integral transformation and Laplace transformation.

从现场上各种水淹的实际资料来看,同一水动力的非均质油层系统中,渗透率相对较高的部分水洗之后,渗透率相对较低部分的油层却可以原封不动。而且,其渗透率可达达西级,含油饱和度可达80%以上。相对流动比(即同一水动力的非均质油层系统中,小层平均渗透率的最大值与其中不流动部分的小层平均渗透率的最大值相比)的比值在各种油层的生产实例中十分相近。一般的分布范围为3—7,常见的为4—6。实验室结果和生产实践基本相同。简单的注水和压裂对这一比值几乎无影响。

The low-temperature peak corresponds to the minimum of relative dynamic modulus and is attributed to elastic modulus softening effect caused by the anelastic motion of the phase interface. The high-temperature peak corresponds to the inflexion point of relative dynamic modulus and the volume change produced by the normal motion of the phase interface is responsible for the peak.

低温内耗峰对应于相对动力学模量曲线最小值,是相界面切向滞弹性运动引起的模量软化所致;高温内耗峰对应于相对动力学模量曲线拐点,是相界面法向运动引起的体积变化所致。

Bamboo variation ofmicrodensity of all age-degree and all height bamboo from bamboo green tobamboo yellow as follows:The downtrend ladder of microdensity the firststage from bamboo green to bamboo yellow is relatively large,normally at theplace 0.35 from bamboo hull(the thickness of from bamboo hull to bambooyellow is 1)micro-density downtrend ladder begin to get smaller,variancerange of microdensity is smaller.When reaching near bamboo yellow area,microdensity reaches its minimum value,and when reaching bamboo yellowsection density increase rapidly,the minimum density of bamboo is only 50% orless of maximum density.Bamboo yellow is comprised of stone cells whichhave thick cell wall,so its density is high,normally 50% to 100% more thanminimum density.Bamboo yellow′s lay thickness is thin,normally the samethickness for all age-degree and all height bamboo,about 0.8mm.From 1 age-degree bamboo to 2 age-degree bamboo during growth,the increase of averagedensity is mainly in bamboo pulp section,from 3 age-degree bamboo to 4 age-degree bamboo,the decrease of average density is mainly decrease in the pulpsection.Same age,same height,the less the density ladder of bamboo radialthickness,the higher the mechanical strength.

所有年龄所有高度的竹材微密度从竹青到竹黄对材性变异规律如下:从竹青到竹黄开始下降梯度较大,一般到相对竹皮距离0.35左右处(整个竹壁厚度为1),竹材微密度下降梯度减小,微密度的变化范围变小,到近竹黄处,微密度达最小值,而后到竹黄部位密度大幅上升,竹材最小密度一般只有最大密度的50%或更低,竹黄由厚壁的石细胞组成,所以密度较大,一般比最小密度增大约50%-100%,厚度较薄,不同年龄不同高度竹材的竹黄厚度相差无几,约在0.8mm左右;竹材从1度竹到2度竹生长过程中,平均密度的增长主要发生在竹肉部分,从3度竹到4度竹生长过程中,平均密度的下降主要发生在竹肉部分,同一年龄同一高度,竹壁厚径向的密度梯度越小,力学强度越高,随着年龄的增大,密度梯度越来越小(1度竹除外),随着高度增加,密度梯度越来越大。

The PSF/TLCP, PC/TLCP blends are seen to exhibit a monotonical decrease with the amount of TLCP increased, the viscosity versus composition curves of PPS/TLCP composites, however, exhibit a minimim with the concentration of TLCP increased.

对于相对较为柔性的聚合物PSF、PC,复合体系的表观粘度随着TLCP用量的增加而降低,但对于刚性较大的聚合物如PPS,则当TLCP用量增加到某一值后,TLCP的加入反而使复合体系的粘度增大,粘度随组成的变化有一最小值。

At a low temporal frequency 5Hz,peak responses occured in response to the maximum(in on-center cells or minimum (in off-center cells) luminances of light modulation with an identical delay.

在低的刺激频率(5Hz)下,给光中心和撤光中心细胞的反应峰值延迟时间(相对于光调制信号的最大和最小值)也相同,表明它们具有相同的反应潜伏期。

A method for realizing special-line user mechanism at reverse direction in communication system includes confirming end object packet length of reverse special-line user, confirming TxT2Pmin and TxT2Pmax value-taken scope of emission service channel energy to pilot frequency channel power grain TxT2P, setting allowable packet length of data packet being send currently to be not less than confirmed packet length and setting reverse packet as per allowable packet length then transmitting set reverse packet according to set TxT2Pmin and TxT2Pmax.

本发明公开了一种通讯系统中在反向实现专线用户机制的方法,该方法包括:A、确定反向专线用户的终止目标包长;B、确定发射的业务信道能量相对导频信道的功率增益TxT2P的最小值(TxT2Pmin)和最大值(TxT2Pmax)的取值范围;将TxT2Pmin和TxT2Pmax设置在所述取值范围内;C、将当前所发送数据包的允许包长设置为大于等于步骤A所确定的包长,按照所述允许包长组反向包;D、按照所设置的TxT2Pmin、TxT2Pmax发送所组的反向包。

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They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性,但我大喊,并在他们的方向扔石头让他们过的线索,远离我,以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。

Store this product in a sealed, lightproof, dry and cool place.

密封,遮光,置阴凉干燥处。