本文介绍了双作用叶片式二次元件的结构和工作原理，分析了其节能原理和特点。
This paper presented the working principle and structure of the double-action vane pump, analyzed its mechanism of variable displacement and characteristics of energy saving.
仿真结果表明采用模糊PID自整定控制后使得二次元件输出动态响应性能大大改善，达到了预期的目标。
Simulation results implied that output dynamic response performance of secondary element improved greatly by adopting fuzzy auto-tuning PID control, the results attained expect aim .
这种装置可以自动测试柴油机在额定状态运行下的油耗率，并配合相应的一次元件能自动测试柴油机和增压器的转速。
This instrument can measure automatically the oil consumption at the normal rating and the r. p. m. of the supercharger and the diesel, fitting with the corresponding primary meter.
哈勃望远镜的工作寿命一而再地得到了延长，航天飞机宇航员也完成了5次维修任务。他们不仅修复了出故障的元件，而且为仪器升了级，给仪表更换了电池。
Hubble's life has been extended time and again through five servicing missions in which space shuttle astronauts have fixed faulty components, upgraded instrumentation and replaced batteries.
在UML2中，框架元件用于作为许多其他的图元件的一个基础，但是大多数人第一次接触框架元件的情况，是作为图的图形化边界。
The frame element is used as a basis for many other diagram elements in UML 2, but the first place most people will encounter a frame element is as the graphical boundary of a diagram.
在循环执行十次之后，一个声音元件将会播放“Goodbye”，然后程序结束。
After the loop executes ten times, a sound block executes that plays "Goodbye" and the program ends.
或者，二向色滤光片可在波长转换元件110上使用以将所透射的泵浦光反向反射到波长转换元件110内用于二次传递。
Alternatively, a dichroic filter may be used over the wavelength converting element 110 to reflect the transmitted pump light back into the wavelength converting element 110 for a second pass.
根据菲涅耳衍射理论，采用微光学元件制作技术，通过三次套刻制作出八位相台阶的二元离轴菲涅耳透镜。
A binary Fresnel lens with 8 phase steps can be manufactured with micro-optical element fabricating technology and three times of alignment according to Fresnel diffraction theory.
提出了用电感电容元件来抑制电源高次谐波，起到了很好的效果，具有较强的实际意义。
Especially on effective method using inductor and capacitor combined component is giving for constraining high-phase harmonic wave of power, which were of much practical meaning.
随着光耦元件在综合自动化变电站二次设备中的广泛应用，其工作特性也需要引起特别关注。
Along with the extensive application of optocoupler element in the secondary equipment of integrated automatic substations, its operating characteristic also needs much attention.
镗床类主轴在最佳方位上装刀，可使加工误差最小，此方位只需被测元件一次安装和测试即可求出。
Fixing a cutting tool in best direction will make the operating error smallest. This direction can be obtained by fixing and testing the measured element only one time.
提出一种适合作为二次变换元件使用的通用型应变传感预制结构——光纤光栅应变片。
A new general prefabricated strain sensor called FBG strain gauge is designed, which can be used as a quadratic transform component.
在一些实施方案中，个别页可划分为区段且区段可含有作为基本编程操作一次写入的最少数目的元件。
In some implementations, the individual pages may be divided into segments and the segments may contain the fewest number of elements that are written at one time as a basic programming operation.
通过灰度掩模平面不同位置处提供可变的透过率，经一次光刻后得到所需的衍射光学元件。
A variable transmittance is provided to different position on grayscale mask plane and the required diffractive optical elements can be obtained after one-time exposure.
保护控制综合单元是“面向对象的变电站微机综合自动化系统”的重要组成部分，是对一次设备实现保护和控制的元件。
The protection and control comprehensive unit (PCCU) is an important part of ISAS, which consists of kinds of function unit such as protection unit, control unit and man machine unit.
由于带盘每旋转一次动力元件都会驱动一下产生抽吸动作，因而还可增加动力元件的数量。
The dynamic element can be driven to generate the aspiration movement as soon as the tape spool rotates, so the number of the dynamic elements can be increased.
高压设备的一次方案图及选用电器元件和参数；
High-pressure equipment used at a program plan and electrical components and parameters;
您可能会想在元件第一次建立时，能够控制执行个体的建立。
You may want to have control over instance creation The first time a component is created.
例如，若您要设计在启动时使用的元件，此元件可能只会在应用程序启动时被呼叫一次。
For instance, if you are designing a component that will be used at startup, it is likely that the component will be called only once, when the application starts up.
采用本实用新型的模具可以一次性整体制得锥管多孔元件，并且多孔锥管强度高，透气性能好。
A taper pipe porous element can be once integrally manufactured by adopting the mould, and the porous taper pipe has high strength and good air permeability performance.
埋入式陶瓷远红外辐射元件，系采用高辐射率的釉层，热震性能好的陶瓷作基体，高质量的电热丝一次绕制而成。
Embedded ceramic far-infrared heaters made of high quality electrothermal wire coiling around the base which is composed of high thermal shock resistance ceramics and high radiance ceramic glaze.
在二次电池的阴极引线与阳极引线之间平行连接各恒定电压元件和MIT元件。
Each of the constant voltage element and the MIT element are connected in parallel between a cathode lead and an anode lead of the secondary battery.
LED的二次光学元件设计对LED路灯的配光及光学输出效率至关重要。
The secondary optics design is a critical issue for the output efficiency and light distribution pattern of the LED street light.
采用进口气动元件，所有气动元件保用50万次。
Imported pneumatic components, pneumatic components guarantee all of 50 million.
采用进口气动元件，所有气动元件保用50万次。
Imported pneumatic components, pneumatic components guarantee all of 50 million.
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