线性元件

From component to system and from theory to practices, This diesis has done extensive research on the fundamental models, optimal design theory -. sensitivity analysis and parameter design etc. of a kind of adjustable linear oil damper on the basis of following the international research steps of oil dampers.

本文以可调式线性油压减振器为研究对象，在跟踪油压减振器国际研究前沿的基础之上，对其基础模型、优化设计理论、敏度性与参数设计等进行了一系列从元件到系统、从理论到实践的深入研究。

Choosing different values of red, green and blue to form different colors, masks composed of these colors can be obtained by color film recorder.

通过选取不同RGB值组合成特定颜色，由彩色胶片输出仪输出这些颜色组成的彩色掩模，获得的彩色胶片掩模用来线性调制曝光量，从而实现二元光学元件台阶深度的线性化。

Compound semiconductor devices are key parts of RF communication applications because they have advantages of high electron mobility, high working frequency, low RF loss, high linearity and low noise. It is so-called "pHEMT" for full name "Pseudomorphic High Electron Mobility Transistor".

中文摘要Ⅲ-Ⅴ族化合物半导体材料所制成之元件，具有高载子迁移率、工作频率高、射频损耗低、高线性度、低杂讯等优势，使得Ⅲ-Ⅴ族化合物半导体元件成为现今射频通讯应用之关键部份。pHEMT为假晶高电子迁移率电晶体之简称。

A novel lightly-doped channel approach for linearity improvement of InGaP/InGaAs pseudomorphic high-electron-mobility transistor device was presented. Light doping in the channel region of the conventional δ-doped InGaP/InGaAs PHEMT was adopted to provide a uniform and symmetric electron distribution in the channel region to achieve flat extrinsic transconductance distribution under different gate bias conditions.

本次实验在传统矽平面掺杂元件结构的通道区域中加入微量的杂质浓度掺杂，使得电子在元件通道层中的分布更为均匀及对称，以期望在不同的闸极偏压条件下得到较为平坦的转导值分布曲线，改善磷化铟镓/砷化铟镓假晶式高电子迁移率电晶体的线性度表现。

Though the present switching power supply has been already much lighter and handier than the early linear power supply. But the switching power supply interior still contains a lot of control functions and each control circuit needs some external passive devices, so it still has certain volume and weight. If we combine all the control circuits and the passive devices with whole combo control IC, it will efficiently reduce the volume and weight of the power supply, and the manufacturing cost of the products can be reduced, too.

中文摘要虽然目前的交换式电源供应器已经比早期的线性式电源供应器轻巧许多，但是交换式电源供应器内部仍然含有许多的控制功能，以及各个控制电路所需要的外加被动元件，因此仍具有一定的体积与重量；若是将这些控制电路以及被动元件皆整合成为一个复合式控制晶片，将使得电源供应器的体积与重量能够有效的缩减，同时产品的制造成本也能降低。

CoFe2O4 is sensitive to low concentration alcohol and acetone, for other gases it has not sensitivity, so this material may be used to inspect low concentration alcohol and acetone.

研究发现，CoFe_2O_4制作的元件对低浓度的乙醇和丙酮气体有较好的灵敏性，对其他气体基本没有气敏性，因此，该材料可用于上述两种气体的低浓度检测；在乙醇和丙酮的低浓度范围内，两种气体的浓度与该元件的灵敏度呈良好的线性关系。

Based on the 1T15M-2 reversible sleeve air spring made by Firestone Corp., an air spring with auxiliary chamber was built. The character of the air spring in vertical direction was described as a linear spring damper element. Using the method of free vibration with damping, the changing rules of the stiffness and damping under different pressure in the air spring with the change of throttle orifice diameter have been studied experimentally.

以美国凡士通公司的IT15M-2型膜式空气弹簧为基础，构建带附加空气室的空气弹簧，将带附加空气室空气弹簧简化为由并联线性弹性和线性阻尼组成的垂直弹性元件，采用单质点自由衰减振动的方法，试验研究不同空气压力下弹簧垂直刚度和阻尼随节流孔孔径变化的规律。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在於：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

Thermal hydraulics: actuation systems, power shift transmission systems, anti-lock braking systems, landing gear, fuel injection systems, active suspension systems, lubrication systems* Gas dynamics: pneumatics, propulsion, sterilization, air and steam cycles, high-pressure gas, gas transmission, adsorption, gas phase reactions, HVAC, ECS, multi-species gaseous systems* Multiphase fluids: refrigeration, air-conditioning, climate control, cryogenic piping networks, steam/water systems, or fuel systems with exotic, volatile fluids.* Systems control hardware and software evaluation data acquisition sampling rates, asynchronous communication, analog and digital electronic filters, control loop execution rates, network (CAN bus communication, etc.* Fuel cells: stationary or mobile.* Electrical systems: AC/DC machines, power electronics, batteries, etc. Flight dynamics, and control systems of all kinds including digital filters

MSC Easy5的独到之处在于：其一，强大的控制系统仿真分析能力，可以建立各种复杂的控制系统模型，包含稳态分析、线性系统分析、频域响应、根轨迹分析等完整的控制系统分析类型；其二，多学科专业应用库，借助专业应用库中的预定义模型元件，向用户提供独一无二的建立系统级模型和研究多学科系统耦合问题的能力；其三，卓越的代码生成和求解器，可以由图形化系统模型自动生成相应的FORTRAN或C源代码，这些代码可以通过编译生成可执行程序，并可被用户调用；其四，高效的高级建模和二次开发功能，方便用户创建用户化模型元件，并可调用外部FORTRAN或C子程序；其五，与其它CAE软件良好的集成能力，可以将不同CAE软件所建立的模型集成到MSC Easy5中建立完整的虚拟样机，是真正的协同仿真平台。

For non-intense beams,particle trajectory can be obtained by multiplying linear transport matrices. For nonlinear transport of intense beams,the influence of space-charge effect on beam transport needs to be taken into account,and self-consistent solution should be derived because of the interaction between charged particle distribution and space charge field. In the program,components and currents are divided into equal intervals,respectively,and each interval is treated as a uniform solenoid field.

程序在计算非强流脉冲束流的线性传输时，粒子的轨迹通过矩阵的直接相乘计算得出；程序在计算强流脉冲束流的非线性传输时，需要考虑束流中的空间电荷效应对束流传输的影响，在束流运动过程中，空间电荷场也在不断地变化，而且粒子运动的轨迹与空间电荷势又是相互依赖的，因此需要求得一个自洽的解，先把元件分成若干均等的区间，把电流分成若干等份，后采用束流电流迭代与元件区间迭代的计算方法。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。