查询词典 reduce

The perpetual inventory system on the values of all assets are normally increasing number and reduce the number of according to relevant accounting vouchers in the books in the registration and settlement account at any time in the property of the book inventory count materials, Usually only for field inventory system of all assets according to the increasing number of relevant accounting vouchers, account credited without registration number, reduce inventory of each month according to the actual number of inventory assets, calculate this number, and reduce relevant account books recorded.

永续盘存制平时对各项财产物资的增加数和减少数都要根据会计凭证在有关的帐簿中进行连续的登记，并随时在帐簿中结算出各项财产物资的帐面结存数；实地盘存制平时只对各项财产物资的增加数根据会计凭证记入有关帐户，而不登记减少数，月末根据实地盘点的各项财产物资的实际结存数，计算出本期减少数，并记入有关帐簿。

Speed up the heart rate, blood pressure; 2 cough; 3 to reduce lung capacity, breathing bad; 4 fingers, toes, skin temperature; 5 to increase gastric acid; 6 trembling fingers; 7 urinary reduced; 8 loss of appetite reduce the senses of taste and smell; 9 dizziness, eye tears; 10 to reduce memory

1心率加快，血压升高；2）咳嗽；3）肺活量降低，呼吸不良；4）手指、脚趾、皮肤温度降低；5）胃酸增加；6）手指颤抖；7）泌尿减少；8）食欲味觉和嗅觉降低；9）眩晕，眼睛流泪；10）降低记忆力

In order to application on high resolution of liquid crystal display, which must reduce differential error voltage in digital-to-analog converter circuit. So, how to reduce the offset voltage of buffer amplifier is important. In the second buffer amplifier circuit, to promote the open-loop gain to reduce offset voltage.

若要使液晶显示器的色彩深度能够大幅提升，就必须采用位元数较高的数位类比转换电路，也就表示其输出的每一灰阶类比电压值的差将会随著位元数的增加而变小，因此输出缓冲放大器的偏移电压就显的特别重要。

to reduce the impact of carrier frequency offset in ofdm system,this thesis designs a new carrier frequency offset estimation scheme for ofdm system.the carrier frequency offset estimation includes acquisition and tracking.we adopt variable step size adaptive algorithm.the acquisition range of the proposed algorithm is as large as one half of the overall signal bandwidth.through this method we can not only avoid the feedback by using forward error correction,but also reduce the times of complex multiplication in order to reduce the power consumption of the system.this algorithm not only has low complexity and fast convergence nut also can improve the demodulation performance of ofdm system.computer simulation illustrates the superior performance of the proposed algorithm with regard to estimation accuracy in both awgn channel and multi—path channel.

摘 要：为了减小正交频分复用系统受频率偏差的影响，在ofdm系统中设计了一种新的载波频偏估计算法。频偏估计包括跟踪和捕获两个阶段，文中采用变步长自适应算法来进行跟踪，这个跟踪算法的捕捉范围是整个信号带宽的一半。通过此方法，不但可以利用前向纠错的方式来避免反馈，而且可以缩减复数乘法的次数以降低计算复杂度和系统功耗。该方法运算复杂度低，并具有较好的收敛性，能改善odfm的解调性能。从计算机的仿真效果可以看出无论是在awgn信道上还是在多径信道上都表现出了卓越的性能。

The main job and contribution of this paper are as follows:Based on narrowband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, compute the cross-correlation function of FH signals from multichannels, then we get the cross power spectral density matrixCSDM Secondly, select the hops of FH signals from the CSDM via processing and analyzing the CSDM, meanwhile reduce the influence coming from noise, fixed frequency signal and other interferences; Lastly, estimating the DOA of every hop and according to the DOA, we can separate the hops, get the number of FH signals and their parameters. Propose a new method for designing the threshold in FH signal detection. This method makes it easy to get the threshold by theoretic computing and it can extremely reduce the interference of non-FH signals.Based on broadband signal processing, we propose a new method for FH signal blind detection and blind parameter estimation. Firstly, get the DOA of the signals by wideband spatial spectrum estimation; secondly, separate the signals by spatial filtering using wideband beamformer; Lastly, we propose two methods for FH signal blind detection and blind parameter estimation, one is for several constant hop-rate FH signals whose dwell-time are different and another is for a single FH signal whose hop-rate is alterable.By employing spatial interpolation in broadband signal beamforming, it can reduce the number of antenna elements and corresponding RF modules, A/D converters, etc. It can also eliminate the mutual coupling between antenna elements while getting the narrower main beamwidth and lower sidelobe level.

本文的主要研究工作和贡献如下：●提出了一种基于窄带处理的FH信号盲检测和参数盲估计的实现方法，即首先求出多路信号之间的互相关，进而得到互功率谱密度矩阵，然后通过对CSDM进行对折处理来抑制噪声、定频信号及其他干扰的影响，并将所有属于FH信号的hop(每一跳的驻留时间在时频图上持续的线段)从CSDM中筛选出来，最后用阵列信号处理中的到达方向估计理论在频域中估计出各个hop的方向参数，利用方位信息完成FH信号分离并得到FH信号的数目及其各自的参数集；●提出了一种确定FH信号检测门限的策略，该策略不仅使得检测门限能够通过理论计算得到，而且还显著地抑制了非跳频信号的干扰，从而能有效地检测出FH信号；●提出了一种基于宽带处理的短波FH信号盲检测和参数盲估计的实现方法，即首先利用宽带空间谱测向技术得到接收信号的DOA，然后采用宽带波束形成技术对特定方向进行空间滤波，实现多个信号的分离，最后分别提出了两种FH信号的盲检测和参数盲估计方法，第一种方法适用于空间某个特定方向上存在着几个驻留时间不同的恒跳速FH信号和其他干扰信号的混合信号，第二种方法适用于空间某个特定方向上仅含一个可变跳速的FH信号和噪声的混合信号；●将空间插值的概念和宽带波束形成技术结合起来，提出了一种基于频域处理的宽带恒定束宽的波束形成方法。

The main direction to reduce decollation rate of yarn is to control and stabilize yarn tension, increase the yarn mightiness and reduce weakness tache rate, especially cut down the break tension and mightiness weakness point to reduce the cross rate of tension wave crest and mightiness wave trough.

由气圈理论的研究我们可以得知：降低断头率的主攻方向是控制和稳定张力，提高纺纱强力、降低强力不匀率，尤其是减少突变张力和强力薄弱环节，以减少张力与强力的波峰与波谷交叉机率。

During the high-voltage device design, the thick epitaxial layer LDMOS which is compatible with current technology was researched. This device used piecewise VLD and multiple region structure F reduce field layer. The using of the F reduce field layer effectively reduce the surface electric field of the device, shorten the length of its drift region, enlarge the choice of range of the ion implant dose of the P layer, and effectively restrain the disadvantageously affection on the breakdown voltage of the interface charge Qss.

在高压器件研究中对与现有工艺相兼容厚外延LDMOS进行研究，该结构采用分段变掺杂多区P~-降场层，有效降低器件的表面电场，缩短器件的漂移区长度，增大P~-降场层注入剂量的选择范围，并有效地抑制界面电荷Qss对器件耐压的不利影响。

They are①ANN based nonlinear coding method to reduce coding delay②the conversion method of CBR streams to VBR streams to make the packeting delay negligible③human perception based main and subordinate packet method to reduce the influence of packeting delay④cell selective discarding and datagram selective shorten method to reduce queuing delay by alleviating the load of links⑤multitask cell or datagram multiplexing method to reduce packeting delay.

作者研究的重点，在于提出了若干降低编码、信息分组装配和分组排队时延的新方法，它们是：降低编码时延的ANN非线性编码法、大幅度降低分组装配时延的CBR码流VBR转换法、基于人耳听觉特性的主次信息分组装配降低时延法、新的降低排队时延和网络拥塞状态的信元选择性删除和数据报选择性截短适配法，以及降低分组装配时延的多任务复合装配法。

For oil-fired boilers: oil-saving rate of 8 ~ 20%; to reduce emissions and sulfur emissions, removal of the nozzle coking coke 45 ~ 95%; improve fuel calorific value 5 ~ 6%; enhance firepower 5 ~ 25%; to reduce the value of spontaneous combustion about 14% and bring the nozzle to remove coke, will notnozzle coking and improved combustion stability, also catalyzed a number of harmful ingredients, can enhance product quality and yield, extend equipment life; can improve heat transfer efficiency and reduce labor intensity work to reduce harmful gas emissions and other benefits.

对于燃油锅炉：节油率为8～20％；降低废气及硫排放、清除喷嘴积炭结焦45～95％；燃油热值提高5～6％；提高火力5～25％；降低自燃值14％左右，并带来清除喷嘴积炭，不会因喷嘴结焦而停喷，提高了燃烧的稳定性，另外还催化了一些有害成分，可提高产品质量和成品率，延长设备使用寿命；可提高传热效率，降低工作劳动强度，减少有害气体的排放等效益。

C A novel universal loss-reduce scheme, namely Dead-Band-Logic is presented. When a traditional method is used, the loss-reduce can only be realized via Space-Vector-Modulation , and the effect of loss-reduce depends on the power factor angle. The DBL can implement loss-reduce only by digital circuit and only need to know the direction of three phase currents.

论文中提出的降耗逻辑只需知道三个电流的方向，仅用数字电路就能实现降耗，此法能自动适应功率因数角的变化，适合于单片机控制，也适合于模拟控制。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。