压气机

The APU is a singe shaft gas turbine engine with a two stage centrifugal compressor, a single combustion chamber and one radial inflow turbine.

APU是一个单轴气动涡轮发动机，它有一个两级离心压气机，一个单燃烧室和一个径向内流式涡轮。

The engine has a low pressure compressor driven by a multi-stage turbine; the power to drive the turbine is derived from combustion of kerosine and liquid oxygen in a rocket-type combustion chamber.

这种发动机有一多级涡轮驱动的低压压气机；而驱动涡轮的功率是在火箭型燃烧室中燃烧煤油和液氧产生的。

D models are the most widely spread in the world of turbo-machinery for its simplicity, but they are indeed purely empirical correlations which not only fail to provide detailed information inside one or more components, but also require significant effort to recreate themselves if engine operating conditions or component representations change; quasi 3-D models have been the workhorses for compressor and turbine design for many years, and the primary benefit of using quasi 3-D system models is to facilitate the design and detail analysis of a particular component across the range of possible boundary conditions; Full 3-D models are gradually replacing quasi 3-D ones by virtue of requiring no exit flow angle model and loss model and being capable of predicting secondary flow in cascade.

零维模型由于使用时简单易行，因此在涡轮发动机的仿真中得到广泛应用，但零维模型作为纯粹的经验关系式无法反映部件内部的流动细节，并且一旦部件有少许改动则新特性的建立耗费巨大；准三维模型由于能够详细地提供部件内部的流动情况，方便设计而成为涡轮和压气机设计的主要工具；全三维数学模型正逐步取代准三维模型在涡轮设计中的主导作用，同后者相比前者能够预测叶轮机械内的二次流动，在粘性流计算时不需要气流角和损失的经验公式，因此拥有巨大的发展前景。

In addition this paper discusses the formation of pittings in the low current density area and the factors affecting the formation.

初步讨论了钛合金压气机叶片在电解加工中出现的一些表面缺陷问题。

A jet engine having a turbine-driven compressor and developing thrust from the ''.

涡轮喷气发动机一种喷气式发动机，有一个涡轮推动的压气机，通过''。

Psid. DIFFUSER, A part of an engine between the compressor and combustion chamber for reducing the airflow speed and increasing the air pressure.

扩散器，发动机内压气机和燃烧室间的一个部件，用来降低空气流速并增高空气压力。

This paper prompt the optimize idea of Minimal Specific Fuel Consumption under the fixed oil quantity supply.

在加入风扇和压气机导叶角度两个寻优变量后，控制算法能够更好的发掘发动机的性能潜力。

A threedimensional flow field of a high-speed centrifugal compressor has been investigated by numerical simulation in this paper.

0前言离心压气机在航空航天、能源、化工及冶金等部门发挥着极其重要的作用。

Furthermore, the new Externally Fired Humid Air Turbine cycle has been proposed and its characteristics been investigated.

本文建立相应压气机入口注水无级间冷模型，从理论上分析研究无级间冷燃气轮机循环的机理和特性。

Unsteady Euler equation was solved by implicit high order Godunov scheme, which had the characteristic of shock capturing and good numerical stability.

计算的总性能参数与设计值对比显示：单部件的仿真精度高于整机，涡轮仿真精度高于压气机。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。