查询词典 variable-density system

Thus, the phenomenon of this autonomous helicopter whose fuselage circles the rotor hub to swing, is one kind of symmetrical two-dimensional pendulum with variable suspension point, and characterized as a non-linear, strong-coupling, high order, unstable system.

其机体绕旋翼桨毂的钟摆现象为对称变悬点二维摆，且具有非线性、强耦合、高阶次、不稳定等特性。

The all-new Frontier also features a longer wheelbase, vented hydraulic disc brakes, automatic continuously variable transmission complete with high and low range, a one-piece handle bar steering system and custom designed 24-inch tires.

所有新边疆还具有较长的轴距，宣泄液压盘式制动器，自动连续可变传输完成与高和低范围内，一个一块处理酒吧助力转向系统和自定义设计的24英寸轮胎。

Then confirm the validity of the controller through simulation algorithm.Here we realized the stable control of chaos system through the mutual effect of state variable which is extremely simple and easy to realize.

本文结合反馈控制方法，提出了一种基于系统状态变量的错位线性控制器设计策略，用李雅普诺夫稳定性方法证明了该控制策略的稳定性，并设计了数值仿真算法验证了控制器的有效性。

For a class of Shunt-wound Active Power Line Conditioner, based on analysis of mathematical model of system and target of control, the algorithm of fuzzy variable structure sliding mode control is presented. The control algorithm can avoid complicated calculation of harmonic electric current in traditional control algorithm, and realize the feedback control of electric current. The algorithm is simple and easily implemented.

针对一类并联型有源电网调节器在分析系统数学模型和控制目标的基础上，提出了模糊滑模控制策略，避免了传统控制方法中复杂的谐波电流计算，实现对电源电流的闭环控制，该算法简单、易于实现，仿真结果证实了变结构滑模控制的有效性。

In this paper the variable frequency air condition's control system model is built with simulink,,as well as simulation and analyse is done based on the parcemeter self-adjustable fuzzy controller.

摘 要：在simulink环境下建立了变频空调系统控制模型，并利用参数自整定模糊控制器进行了仿真和分析。

To study the performance of screw compressor, the key component in heat pump chiller, a mathematic model for simulating the behavior of the compressor's working process is presented in this paper, based on the thermodynamics of mass-variable system and the p-V indicator diagrams acquired by experiment.

为此，本文在实测压缩机在经济器补气工况、部分负荷工况、不同冷却方式等工况下p-V指示图的基础上，并基于变质量系统热力学原理，建立了螺杆制冷压缩机工作过程热力学数学模型，考虑了喷油、泄漏、热交换及补气等因素对工作过程的影响。

In a market economy, enterprises must attach great importance to technological progress, and to take practical actions to achieve universal adoption of concrete admixtures; scored with ribbed steel bars of variable cross-section to replace the glossy steel as the production of prestressed Concrete products and reinforced concrete products, reinforced; concrete mixing system to the early realization of microcomputer control; by roll welding machine to replace the hand-made steel skeleton of banding; centrifugal molding, product testing, as well as a phase of water pressure of the pressurized pipe to achieve the conservation process of automatic control ; vigorously promote energy conservation, etc.

在市场经济条件下，企业必须高度重视技术进步，并采取可行的措施，尽快实现普遍采用混凝土外加剂；用带肋刻痕的变截面钢筋取代光面钢筋作为生产预应力混凝土制品和钢筋混凝土制品的配筋；混凝土搅拌系统要尽早实现微机控制；用滚焊机取代手工绑扎制作钢筋骨架；离心成型、产品水压检验以及一阶段制管的加压养护过程实现自动控制；大力推广节能养护窑等等。

At the same time, it can improve the ripple of the voltage. Based on the fussy variable-structure control, the effect of PSVC in improving the stability of the system is studied deeply.

本文进一步做了PSVC对系统稳定性的研究，通过分析证明了：当引入系统角频率的变化量作为辅助控制信号时，PSVC能够提高系统的阻尼，使系统的动态稳定性明显提高。

With 300-dpi (12 dots per mm) resolution, the system can print fixed and variable text, graphics and multiple bar code formats on a variety of packaging substrates to add expiration dates, product identification information, lot/batch numbers, company logos and more to thermoformed packages and IV bags.

- dpi（12点每毫米的决议，该系统可以打印的固定和可变文本，图形和不同的包装多种条码格式基板添加到期日期，产品标识的信息，很多/批号，公司标志和更多的热成型包装和输液袋。

Long-made electrical control in the industrial field, is a leading provider of variable frequency peripheral products, control system suppliers, the industry, including municipal, Elevator, lifting, power, metallurgy, machine tools, textiles, etc..

龙造电气在工业控制领域，是中国领先的变频周边产品、控制系统供应商，涉及的行业包括市政、电梯、起重、电力、冶金、机床、纺织等。

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。