真空

Chitosan-L-lactic acid composite asymmetric membrane for the regeneration of peripheral nerve was obtained by grafting L-lactic acid onto the amino groups in chitosan without any chemical initiator combined vacuum freezer drier.

摘 要：对不使用任何化学引发剂在真空下使壳聚糖与L-乳酸接枝共聚进行研究，结合真空冷冻干燥工艺制备一种用于周围神经再生的复合不对称膜材料。

Descriptions SZG series Double Taper Vacuum Drier is a new generation drying device develope d by our factory on the basis of combining the techology of same products. It has two connecting ways.i.e.pullet or chain.Therfore it is stable in operation.

SZG双锥真空干燥机是我厂在结合国内同类产品技术所开发新一代干燥装置，&益球&双锥真空具备皮带/链条两级弹性联结方式，因而设备运行平稳。

In the operation, many factors have influences on vacuum degree of condenser, among which the main factors are: inlet temperature of cooling water, flow rate of cooling water, tube bundle surface cleanness of condenser and vacuum system tightness, etc.

在运行中，影响凝汽器真空度的因数很多，其中主要有：冷却水进水温度、冷却水的流量、凝汽器管束表面的清洁状况，以及真空系统的严密性等。

During the process of steam turbine start-up and normal operation, vacuum extraction equipment must run,whether it works normally effects on the vacuum of condenser directly and decide whether turbo-generator can operate safely and economically.

汽轮发电机组在启动和正常运行过程中，抽真空设备都要投入运行，其工作的正常与否直接影响凝汽器的真空以及机组能否安全、经济运行。

With the established model, the optimization model of condenser is proposed to determine the best vacuum value of condenser and energy loss resulted by deviation of some main operation parameters, reduce the energy loss by optimize the controllable parameters.

在此基础上，建立发电功率与凝汽器真空的优化模型，确定热力系统各主要参数对汽轮机功率的影响以及凝汽器真空的运行应达值，以机组的最优运行为目标，优化可控参数，达到降低能耗的目的。

With the established model and the data of power needed in cycle cooling water system, the best vacuum value of condenser can be determined, and energy loss result by deviation of some main operation parameter can also be determined, compared with conventional models , the model established by us has the advantage of pertinence to the actual equipment since the sample data were collected from the operating equipment.

利用该模型和循环水系统功耗模型可确定不同工况下的真空运行最优值，为凝汽器真空运行最优值的确定提供了一个全新的方法，同时利用该模型计算几个主参数偏离基准值的能损偏差，同传统的运行参数基准值模型和能损偏差分析方法相比，该模型具有明确的设备针对性。

Can be effective in a vacuum chamber and can prevent the reflux of hydrocarbons.

能有效地使真空室处在真空状态下且能防止碳氢化合物的返流。

Six measures took by Bo'ai filiale: first, have a good arrangement on administration and training; second, put more effort on reorganization and service of vacuum line mechanical device; third, put more effort on quality examination of raw material and the half-finished product; fourth, fulfiling the vacuum bulb production technique seriously; fifth, strengthen the digitization management; sixth, strengthen the scene management.

在具体的攻关活动中，博爱分公司共采取了六项主要措施：一是做好人员配制、管理和培训；二是加大真空线机械设备的维修与整改力度；三是加强对原材料、半成品质量的检验与把关；四是严格执行真空泡生产工艺；五是加强数据化管理，做好生产过程中的废品统计分析；六是加强现场管理。

First of all, vacuum circuit breaker and several methods of detecting vacuum degree in common use including their disadvantages are introduced in the paper.

文中首先简要介绍了真空断路器和几种常用的真空度检测方法并给出其存在弊端。

The characteristics and the advantages of the VD4 Vacuum Circuit Breaker s are de-scribed,as well as its type test.

本文分析了断路器开断小电感性电流时产生截流过电压的原理，提出了抑制过电压的方法，论述了 VD4真空断路器的结构特点和优越性能，介绍了其完整的型式试验，总结了真空断路器的操作要领。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。