平面

The conditions for the existence of crank for Watt's mechanism, a basic type of one-degree-of-freedom planar six-bar mechanism,are investigated with the triangular dividing method and the method of instantaneous fixing of the driving bar.

本文采用平面杆机构的三角形划分法及主动杆瞬时凝结法探讨了单自由度平面六杆机构的一种基本型式——Watt型机构的曲柄存在条件；并用取极限的方法得到了其诱导机构的曲柄存在条件。

Through the course, students are expected to learn the basic theories of house construction; to master the general construction making of buildings and the drawing methods of detailed construction pictures; to be able to read shop drawing of general industrial and civil buildings and draw building's shop drawing according to design intentions; to know the construction design principles for general buildings; to have basic knowledge of construction design and to be able to correctly understand design intentions.

建 筑构造部分介绍建筑的组成、各组成部分的构造原理和构造方法，建筑设计部分介绍一般建筑的设计原则和设计方法，包括总平面布置、平面设计、剖面设计、立面体型及细部处理等方面的问题。通过这门课程的学习，使学生掌握房屋构造的基本理论；初步掌握建筑的一般构造做法和构造详图的绘制方法，能识读一般工业与民用建筑施工图，并能按照设计意图绘制建筑施工图；了解一般房屋建筑设计原理，具有建筑设计的基本知识，正确理解设计意图。

A method to generate the bias voltage of infrared focal plane array is proposed,which use cascade weighted-capacitor network to scale charge on them.

以上研究证实了这种可集成在红外焦平面读出电路上的偏置电压产生电路是可行的，为下一步直接设计并制造包含偏置电压产生电路的焦平面读出电路芯片打下了坚实的基础。

Enterprise-led products: automatic transmission sandblasting machine, automatic turntable sandblasting machine, Automatic ring sandblasting machine, sandblasting machine flat glass, flat plate sandblasting machine, sandblasting machine ceramic automatically without air compressor, box-type roller spray sand machine, box-type turntable sandblasting machine, box-type pressurized sandblasting machine, semi-automatic wheel blasting machine, box-type vehicles blasting machine, box-type environment-friendly sand blasting machine, sand blasting open pressurized machine, shot blasting machines, such as sandblasting room.

企业主导产品为：自动输送喷砂机、自动转台喷砂机、自动环形喷砂机、平面玻璃喷砂机、平面钢板喷砂机、自动陶瓷片喷砂机无需空压机、箱式滚筒喷砂机、箱式转台喷砂机、箱式加压喷砂机、半自动轮毂喷砂机、箱式台车喷砂机、箱式环保型喷砂机、加压开放式喷砂机、抛丸机、喷砂房等。

Finally, the adaptive control strategy of active balancing for a strictly positive and real rotor with actuator time delay is successfully extended to a flexible rotor with single collocated plane and a flexible rotor with multiple collocated planes. A series of numerical simulations demonstrate that the proposed controller is valid to suppress the imbalance-induced vibration of these rotor systems.

最后，把带作动器时迟的严格正实转子系统的自适应控制策略成功地推广到具有单并置平面的柔性转子及具有多并置平面的柔性转子，一系列数值模拟验证了该控制律对抑制这些转子不平衡振动的有效性。

Finally, the adaptive control strategy of active balancing for a strictly positive and real rotor with actuator saturation is successfully extended to a flexible rotor with single collocated plane and actuator saturation and a flexible rotor with multiple collocated planes and actuator saturation. A series of numerical simulations show that the proposed adaptive control law can evidently reduce the original imbalance-induced vibration of these rotors and the actuator movement asymptotically approaches to its target value, the opposite of the original imbalance.

最后，把提出的自适应控制策略成功地推广到带作动器饱和、单并置平面的柔性转子和带作动器饱和、多并置平面的柔性转子，一系列数值模拟显示：该控制律能显著减小这些转子原始不平衡引起的振动，作动器的移动能渐近收敛到与原始不平衡相反的目标值。

The hammer with the force sensor strikes the static rotor correction plane to send the excitation signals measured by the force sensor to the charge amplifier and to the signal collector.

由带力传感器的力锤敲击静态转子校正平面部位，将力传感器测得的激励信号送入电荷放大器，经放大后送入信号采集器，由电涡流传感器测得转子多个校正平面部位的位移响应信号，经电涡流测振仪放大后送入信号采集器，根据传递函数和影响系数之间的关系，可获得转子校正部位的影响系数。

The calculated NICS values show that nucleus-independent chemical shifts values of roof-shaped isomers for Sb42-, Bi42-, and22- species are all negative, consequently indicating that these roof-shaped isomers possess aromaticities. NICS values for the planar ring isomers are all positive, suggesting that these three planar ring isomers have antiaromatic characters.

计算显示Sb42-、Bi42-和22-团簇的所有屋顶型结构的核独立化学位移全部为负值，从而说明这些屋顶型结构拥有芳香性；平面环结构的核独立化学位移值全部为正值，说明这三种平面环结构具有反芳香性。

The experimental results show that under the present experimenal condition and in the cases without and with applied field, collisions are the reason leading to plane wave attenuation in the plasma. Plasma resonance absorption and upper hybrid resonant absorption mechanisms can not be found.

实验结果表明在非磁和本实验条件下，平面电磁波在等离子体中的衰减机理为碰撞吸收；在有磁和本实验条件下，平面电磁波在磁等离子体中的衰减机理同样为碰撞吸收，但是外加磁场的存在有限地改善了等离子体的吸波效应。

In this paper, a new model of microplane theory was adopted in the analysis of this type of concrete steel composite columns.

尝试采用混凝上微平面本构模型，运用通用有限元分析软件，编写了混凝土微平面模型的用户材料子程序，分析钢管混凝土构件的受压承载力性能，并在已有试验的基础上进行了比较和分析。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。