查询词典 pre Marxian

A fast direction of arrival estimation method of wideband sources has been proposed. A new techniques is presented to compute the focusing matrix. It needs no direction pre-estimation or matrix eigendecomposition, so the focusing matrices are insensitive to the signals' direction and the computation is simple.

提出了一种新的聚焦矩阵的计算方法，该方法不需要进行角度预估计，也不需要进行任何矩阵特征值分解，对信号方向不敏感，运算量小。

Using data of the traffic flows in the current cyc le and the cycle before, the traffic flows in the next cycle may be estimated th rough the linear pre-estimation method and each phase time in next cycle is dete rmined with GA optimizing method.

通过对本周期及前一个周期的车流量进行实时测量，采用线性预估方法，对下一个周期的车流量进行预估，以最大通行能力为路口模型控制性能指标，从而确定下一周期的相位配时方案。

Comparing tow methods of efficency pre-estimation, it finds out the new method fit for super-low specific-speed pump. Acoording to the study and comparison on efficency and reliability, the thesis points out merits and faults of the 5 types of impeller, and draws a conclusion that the complex impeller and partly blocked-flow-passage impeller are fit for the impellers of super-low specific-speed centrifugal pump.

比较了泵效率预估的方法，提出了适合于极低比转数泵效率预估的新方法，并对其性能要求的效率和可靠性两方面进行了研究比较，指出了五种形式叶轮各自的优缺点，得到结论：复合叶轮和部分堵塞流道的一般叶轮适合作极低比转数泵叶轮。

To overcome the above described drawbacks,P.W.Baier and other researchers propose a novel multi-user transmission scheme for the downlink of TD-CDMA termed joint transmission. This paper discusses the application of JT technology in the FDD system,and proposes a new solution: Through feedback signal,channel pre-estimation is accomplished at the base station.

为此提出了名为联合传输的多用户传输方式，可以利用TDD模式上下行链路移动无线信道脉冲响应相等的优点，只在上行链路对信道进行估计，下行链路利用估计得到的信道冲击响应值，把在移动台判决传输信号的任务交给基站来完成，利用这种技术可以提高系统性能和减少系统复杂性。1系统模型及JT原理联合传输技术[1～3]，可由信道传输概念引出，如图1所示。

Displaying the manifestation of the Pre-Eternal Sun, it acquires a connection with the laws of His

展示永恒的太阳的光芒，它需要一个有关智慧的法规

O pre-eternal God, have mercy upon us.

啊，从永远之前就有的天主，请垂怜我们。

Have been investigated by changing temperature of PVDF resolution, types of solvent, molecular weight of PVDF, weight of additive, time of solvent pre-evaporation and so on.

在完成膜蒸馏通量测试装置的基础之上，本课题对PVDF复合膜的脱盐性能进行了研究，考察了料液温度，料液盐浓度，料液流量，操作压力，操作时间，气隙距离，支撑体种类，料液中离子种类对蒸馏通量，除盐率及蒸发效率的影响规律。

It's result that the parameters for good performance should be as follow:17% the concentration of PS,5% the concentration of PVP,20S for pre-evaporation time and 4% DMAC contration in the coagulation bath.

此次实验结论是在聚砜含量17%，PVP含量5%，预蒸发时间20S和凝固浴浓度4%的条件下，制备出的聚砜平板膜的性能良好、表面具有较高孔隙率。

The effects of some important factors on structure, pore size, porosity, flux, weight of vapor transfer, etc. have been investigated by changing temperature of PVDF resolution, types of solvent, molecular weight of PVDF, weight of additive, time of solvent pre-evaporation and so on. The optimal process of making membrane and recipe of solution were made out.

然后通过改变PVDF溶解温度，铸膜液的溶剂，PVDF的分子量，PVDF用量，添加剂氯化锂用量，涂膜时预挥发时间，凝固浴温度以及凝固浴中无机盐氯化钠、溶剂丙酮等影响因素，考察这些因素对膜形态结构及孔径，孔隙率，水通量，透湿量等性能的影响规律，初步确定了铸膜液配方及涂膜工艺条件。

But do not you worry, if you regularly do a pre-examination, the doctor should tell you.

你不要担心，如果你定期做了孕前体检的话，医生应该会告诉你的。

You can buy sweetened beverages, if that suits you.

你若喜欢的话，可以买些含有糖精的混合饮料。

As many of you are probably aware, Nick and Vanessa were recently faced with an embarrasing sex scandal after naked pictures of the two getting jiggy with it in a hot tub surfaced the net.

正如很多你可能知道，尼克和 Vanessa 最近面临一个尴尬的绯闻事件后，赤裸裸的图片两个越来越jiggy与它在浴缸中的一个热点浮现净。