交换

He gave me a bar of chocolate in exchange for my apple.

他拿一条巧克力和我交换苹果。

For this class, the specifications to be achieved by the A/D converter determine the technology.

为这类， A/D交换器将达到的规格确定技术。

People in the internet marketing community have discovered a new form of marketing web pages and exchanging links, and this method is quickly gaining a large head of steam.

人们在互联网上发现一个新的社区营销方式和营销网页交换通而且这种方式很快赢得头大汽。

A constellation in the region of the celestial equator between Leo and Libra.Then his opponent has the right to serve.

直到交换发球权之前可连续发球，交换发球权后对方首先在右发球区发球。

In Cienfuegos, when your correspondent went to the official exchange house, he was ushered into a shop next door by a muscular young man in dark glasses who offered to swap euros for CUCs.

在 Cienfuegos 中，当你的通讯记者去官方的交换房子的时候，他进入一个商店隔壁之内被黑暗的眼镜一个强壮的年轻男人引导谁表示为 CUCs 交换欧元。

It implements the data information exc...

实现大型网络系统中异构数据库信息系统间数据信息交换，多级网络系统间数据信息交换。

The Simulation results indicate:(1) Exchanging of sea-air and force of dynamical and thermodynamic processes is very important to bring and maintain sea surface wind .SHF is mostly energy sources and LHF is negative effect in some area.

模拟结果充分表明：(1)感热和潜热的海气交换和动量交换对于海面风的发展和维持起着重要作用，潜热加热是海面风中最主要的能源，感热通量在一武汉理工大学硕士学位论文定区域对海面风风场有负面影响。

High-speed, muti-services and economy have become the major issues of the futUreIP backbone technology As far as thes poiflt is concerned, thes paPer explores layer 3switdrig technology Which seParates control comPonent and fOrward comPontal in thetraditional roulers. TWo forwarding al gori thms ----d ata-driven mo d el and top olo gy drivenmodel are also comPared, a next generation IP backbone echno l o gy---- Multiproto co lLabel Switching is developed, with its operation and its dePloyInent in traffic engineering,c1ass-ofservce and virtual private network.

本文从未来IP骨干网技术所要求的高速化、多业务支持、经济性出发，介绍了在传统路由器基础上将控制部件和转发部件分离的第三层交换技术，比较了数据驱动模型和控制驱动模型两种转发算法，并由此引出下一代IP骨干网络技术——多协议标记交换，阐述了其工作原理以及在流量工程、服务等级区分和虚拟专用网中的应用。

Sometimes,we virtually reade our lives for not only basic necessities,but for excessive items and services as well.

事实上，有时，我们不仅用生命交换生活必需品，还用生命交换多余的物质享受和服务。

The main research work of this dissertation is as follows: Based on the chemical reaction engineering theory and the nitrobenzene electroreduction mechanism, the plate and frame electrolyzer was designed and applied to the process of electroreduction nitrobenzene to p-aminophenol. This dissertation measured the residence time distribution data of the electrolyzer by means of the pulse response method and studied the rule of flow pattern along with the current capacity change. Under different conditions ,this dissertation studied the cyclic voltammetry properties of nitrobenzene on different electrodes by means of the dynamic cyclic voltammetry method and the electrode materials applied to the NB electroreduction have been selected primarily.Baseed on the results of cyclic voltammetry tests, this dissertation used p-electrode systems to measure the steady-state- polarization curves of nitrobenzene on different electrodes in H-type diaphragm cell, and obtained each primary factor s influence rule and the exchange current density value of each electrode.And then on the basis of the conclusions of fundamental researchs upword, the effects of influence factors on the the yield of p-aminophenol and the current efficiency,such as electrode material, current density, quantity of electricity circulated, nitrobenzene concentration . sulpuric acid concentration and so on, have been studied in detail in the systems of hign temperature , strong acidity and oxygen-poorthrough a series of electrolysis experiments in this paper.After all using Pb as anode Monel metal as cathode Dupont Nafion 417 cation-exchange membrane as membrane, this dissertation obtained the optimum technological condition: reaction temperature about 85C, current density 500A m-2, sulphuric acid concentration 20%wt.

论文的主要研究工作为：运用化学反应工程理论，结合硝基苯的电还原机理，设计出用于硝基苯直接电还原合成对氨基苯酚实验的板框式电解槽，并利用脉冲响应法测定了该板框式电解槽的停留时间分布数据，研究了流型随流量变化的规律；通过动态循环伏安法研究了硝基苯在不同电极上、不同条件下的循环伏安特性，初步评选出了用于硝基苯电还原的电极材料；结合循环伏安的测定结果，在H型隔膜电解槽中采用三电极体系测定了硝基苯在不同电极上、不同条件下的稳态极化曲线，得到了各主要因素的影响规律及硝基苯在各个电极上电还原的交换电流密度数值；在基础研究结论指导下，采用板框式电解槽，在高温、强酸、贫氧系统中，进行了一系列的电解实验，分别考察了电极材料、电流密度、通电量、硝基苯浓度、硫酸浓度等因素对收率及电流效率的影响，最终选择以蒙乃尔合金电极作为阴极、铅合金为阳极、Dupont Nofion 417阳离子交换膜为隔膜，得到由硝基苯直接电还原制对氨基苯酚的最佳电解工艺条件：反应温度85℃，电流密度500A·m~(-2)，硫酸浓度20％wt。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。