无基础的

Simulation results show that the proposed model is correct. The proposed model offers reference for the design of DC brushless motor/generator, and can be used as technical reference for both Boost circuit and the control of digital signal processor of DC-AC conversion process.

仿真结果表明所建立的仿真模型是正确的，该模型可为直流无刷电机/发电机的设计提供参考依据，在此基础上并为Boost电路和DC-AC转换过程的数字信号处理器控制提供技术上的指导。

Based on quantitative type AHP that combine with grey relational grade analysis, we built up a hierarchy-relational synthetic majorized model for multiple attribute decision problem that without information and it is difficult to determine the weight of indexes. We evade pessimistic principle、optimistic principle and eclectic principle these simple methods that we used before.

对于无信息而又难于确定指标权重的多指标决策问题，避开了以往所采用的悲观原则、乐观原则及折衷原则几种简单的方法，在定量型层次分析法的基础上，结合灰色关联度分析法，建立了层次—关联综合优化模型。

On the basis, with model reference adaptive method, the rotating speed estimation for vector control system with no-peed sensor is studied. In addition, aiming at the problem that the reference model is easily influenced by the initial value and drift of integral in normal speed recognizer, the traditional MRAS is improved, and modeling simulation is also conducted.

在此基础上，应用模型参考自适应方法，对无速度传感器矢量控制系统的转速估计进行研究，并针对常规速度辨识器中的基准模型易受积分初值和漂移影响的问题，对传统的MRAS方法进行改进，并对其进行建模仿真。

The step motor can receive digital signal directly and has the ability to response outer environment immediately and has no accumulation error, which often is used in driving system. In this driving system, open-loop control system is composed of stepping motor, which can satisfy the demand not only for control precision but also for the target of economic and practicality. On this basis , the analysis of stepping motor in power calculating and style selecting is also given.

由于步进电机能够直接接收数字量，响应速度快而且工作可靠并无累积误差，常用作数字控制系统驱动机构的动力元件，因此，在驱动装置中采用由步进电机构成的开环控制方式，这种方式既能满足控制精度的要求，又能达到经济性、实用化目的，在此基础上，对步进电机的功率计一算及选型问题经行了分析。

On the basis of introduction of kinematic analysis methods, the paper founds the stationary coordinate system and the wheel coordinate system respectively. Meanwhile, the kinematic constraint equations of the standard centered orientable wheel is founded on the assumption that there is no slippage in normal direction and pure rolling in tangential direction of the wheels.

在简要介绍常规的运动学分析方法的基础上，建立了相关的惯性坐标系和滚轮坐标系，并根据滚轮在法向无滑动、切向作纯滚动的假设建立了中心定位轮的运动约束方程。

The fluid mixture process has been studied under power-free driven technology through designs of chip structure and numerical analysis. Then the fluidity, fluid velocity and reaction sufficiency of immunoreaction has been studied based on this chip platform. The results have been validated and the sensitivity has been effectively improved.

通过芯片结构设计和数值分析，研究了在无动力气压驱动方式下的液体混合，在此基础上对芯片平台上的免疫反应的流动性、流速控制和反应充分性进行研究，设计实验对结果进行验证，有效提高了检测的灵敏性。

in this paper,the stealthy target′s millimeter wave radiation character is studied.the millimeter wave attenuation induced by sea fog is analyzed.and the detecting capability of the ground-based passive millimeter wave radiometry arrays is discussed.according to one dimension 32 channel 8 mm radiometry arrays detecting stealth target,we have a simulation.the results of the simulation show that it is an efficient way in the thick sea fog condition.

摘 要：研究了空中隐身目标的毫米波辐射特性，分析了浓海雾对毫米波辐射信号的衰减，并对无源毫米波辐射计阵列探测热辐射源的性能进行了分析。在理论建模的基础上针对一维32通道8 mm辐射计阵列探测空中隐身目标进行了仿真实验，结果表明毫米波辐射计阵列在浓海雾气候条件下探测空中隐身目标是一种非常有效的手段。

In contrast, in 55℃ treatment for 5 and 10 minutes, it was increased to about 140% of the control, and was further increased to about 240% and 290%, resp. after following readaptation to room temperature in 60 minutes. Thus in the inactivation of the PSⅡ reaction centers, a slow, indirect process was induced by high temperature stress, in addition to a prompt, direct action.

而55℃5分钟和55℃10分钟高温胁迫后，在恢复期内其PSⅡ无活性中心的含量从常温的1.4倍左右的基础上分别上升至2.4和2.9倍，说明高温胁迫对PSⅡ中心除了起瞬时钝化作用外，还存在一个间接的较为缓慢的持续钝化作用。

According to the prior research , a highly efficient ext raction method was modified1 High2concent ration and DNA 2f ree RNA could be attained by using CTAB/ Guanidine Thiocyanate ext racion buffer1The total RNA can reach 1.7～2.0 of the OD260/ OD280 ratio with the yield of more than 015mg per gram of f resh tissues1 The method is suitable for high2quailty total RNA ext raction in leaves , root s , corollas , seeds and developing fibers.

本研究在前人方法的基础上对快速提取棉花组织总RNA 的方法进行了探讨。利用改进的CTAB 异硫氰酸胍裂解缓冲液，获得的RNA完整性好，无 DNA 污染，含量高，每克鲜组织能提取015mg 总RNA ， OD260/ OD280比值均在117～210之间。

The module of data managementintegrates and renews planning data and basic data. The modules of month production planning and produc2tion scheduling have production planning and production scheduling programmed. C onsequently productionplanning and production scheduling can be quickly and effectively obtained. The module of rolling planning responses promptly to the change of information and makes rolling planning possible.

数据管理模块实现计划数据与基础数据的集成以及数据的及时更新；月本论文由无忧论文网 www.51lunwen.com 整理提供计划编制与生产作业计划编制模块使计划工作程序化，实现计划的快速有效编制；计划滚动模块及时响应信息的变更，实现计划的滚动编制。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。