变宽

However, the data in transmission will suffer the channel noise and drop the quality of the transmission.

随著传输频宽增加的同时，多媒体的传输虽然变的迅速、方便，却也同时产生了通道杂讯的干扰。

Aunder the condition of trenched field surface,the wetting front plotted in the laboratory ex-periments showed a good agreement with that by computer simulation,for example,after 600min,the largest error of the wetting front by two methods was less than 8cm.

对于矩形开槽处理粘壤土田面，在松土面积不变的情况下，松土效率随着耕宽的增加而降低，随着耕深的增加而增加，最佳参数为：松土间距s=80cm，松土深度h=10cm，松土宽度w=10cm。

The experimental results show that the spectral width caused by using overall affix is 0.28 nm, and the linearity of using two-spot affix increases by 1.89%.

由实验结果得出，在压力为0~4N测量范围内，采用全粘附耦合引起的FBG反射光谱的展宽约为0.28nm；采用两点粘附耦合后，谱宽不随压力而变，而线性度较之全粘贴耦合时提高了1.89%。

To eliminate common-mode voltage of cascaded multi-level inverter, three kinds of phase-difference SVM based on left and right bridge vectors are proposed firstly. From these three modulations, equivalent SPWM components are deduced, and the unipolarity and bipolarity of output waveforms are analyzed. 2π/3 PD-SVM (phase-difference space vector modulation) is testified be unipolar.

为消除级联型多电平逆变器的输出共模电压，首先提出了基于左、右桥臂矢量的三类相差空间矢量调制(space vector modulation，SVM)技术，数学推导出三类调制技术的等效正弦脉宽调制(sine pulse width modulation，SPWM)的调制波，并分析了其各自相电压输出波形的单、双极性，证明2π/3相差SVM必为单极性调制。

Making use of field matching method,combining with the variational method,the dispersion equation of the ridge loaded ring plane slow wave structure and small signal gain of this type of TWT are presented in this paper.

脊加载环板行波管是一种频带相对较宽的大功率行波管，本文用场匹配和变分原理相结合的方法，研究了脊加载环板慢波结构的导波特性及这种行波管的小信号、大信号特性，讨论了结构的几何尺寸及电子注参量对慢波的传播特性、小信号增益及注波互作用非线性效应的影响。

The snow lies warm as cotton or down upon the window still; the broadened sash and frosted panes admit a dim and private light ,which enhances the snug cheer within.

世界静悄悄的，雪下了厚厚的一层。窗棂上象铺了柔软的棉花或羽绒；窗格子显得格外宽了些，玻璃上爬满了冰纹，看起来黯淡而神秘，使家里变得更加温馨舒适。

Results 19 cases of arthrosclerosis or joint hyperplasia and deformity,32 cases of broaden or stenosis of the joint space,17 cases of unsmooth articular surface and 11cases of vacuous articular space were found in 35 cases of LVA from 42 patients.

结果 本组共诊断腰椎小关节病35例，其中关节突增生、硬化、变形19例；关节间隙左右不对称变窄或增宽32例；关节面毛糙17例；关节间隙内真空征11例。

The L band 500W SSPA module which has reached national level is the first sample of the Southwest China Research Institute of Electronic Equipment in this aspect;2. The method which to obtain fast rising time for narrow pulse width is got;3. The method of eliminating autoecious surge with pulse power amplifier is presented;The cause of pulse shape aberration is analysed.

二、工作的创新之处(1)L波段500W固态功放组件达到国内先进水平，是29所研制的第一台固态雷达功放组件；(2)得到了如何在窄脉宽情况下获得快速上升沿的方法；(3)提出了针对脉冲功率放大器的消除寄生振荡的方法；(4)对脉冲波形变差进行了分析。

6Mm, width is about 0.15mm; When the sludge begin to acclimate to the nitrous nitrifying conditions, bacillar flocculation gradually dwindle and decomposition, still disperse into little flocculation.

6高浓度氨氮废水亚硝化稳定期的特征污泥相为：杆状絮体，长度约0.25～1.6mm，宽约0.15mm；当污泥开始对亚硝化产生适应后杆状絮体逐渐变小、解体，直至分散成为很细碎的絮体。

The bankfull cross-section area of the lower Yellow River experienced four alternating periods with expansion and shrinkage from 1960 to 1997,i.e.1960-1964 expansion,1965-1973 shrinkage,1974-1985 expansion and 1986-1997 shrinkage.

黄河下游河道萎缩有多方面的表现，如过流能力降低、同流量水位抬升、畸形河湾发育、河宽变窄、平滩水位下断面面积减小等。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。