伸缩的

Supporting type is suggested to be developed into 3-prop to improve adaptability besides 2-prop and 4-prop. The difference of caving difficulty degree of coal seam is the base of caving coal method at high, medium and low position. Caving with small step and open caving flashboard used widely not only cause serious mixture of coal and rock but also hinder the improvement of top coal recovery. So we suggest caving with large step or closing caving door. Four-bar-mechanism of hydraulic support restricts development of new style caving powered support. Stabilization framework of expansion link and all-shield caving tail beam at high, medium and low position are introduced here.

支架支护型式，除了两柱、四柱以外，建议开发三柱支架以改善适应性；煤层冒放性的差异，是高位、中位和低位放煤方法存在和使用的依据；目前广泛采用的小步距放煤和开放式放煤插板不仅造成严重混矸漏矸，也妨碍顶煤回收率的进一步提高，建议采用大步距放煤和可关闭放煤口；液压支架四连杆稳定机构，制约了新型放顶煤液压支架的开发，介绍了液压支架伸缩杆稳定机构及全掩护拖移高位、中位和低位放煤尾梁。

Custom-made capacity: In order to meet the customer demand,if our standard equipment can't satis for customers' working need,we can adjust the cap quantity,power,spotliht or floodlight,raising eight of the flex pole and generating set according to you request.

为您定做：为满足客户个性化的需求，本产品的标准配置不能满足用户的工作需要，我公司可在控制箱上的灯头数量、功率、泛光或聚光、伸缩气杆升起高度及发电机的装备按您的要求作调整。

The definition of Wavelet Analysis is that shifting the mother wavelet e.g. which has limited energy, such as shifting for, then proceeding dimensions, we obtained wavelet basis function ,, which make the inside product to the function to analysis With the Fourier transformation to the and, then the equivalent frequency spectrum of wavelet transformation can be expressed as where 、 are the transformations of 、 respectively and i is an imaginary number unit.

小波变换的含义是：把一具有有限能量的母小波，如进行移位后，再进行尺度的伸缩得到小波基函数为然后与待分析的函数作内积，即对和作Fourier变换后，可得到小波变换的等效频域表示为：其中、分别是、的Fourier变换，i为虚数单位。

FT-IR spectrum showed that the new bands at 3000cm-1~2700cm-1 and 1600cm-1~1400cm-1 were assigned to the C-H telescopic vibration and the framework vibration feature of imidazole ring, besides the characteristic bands of BMMs appeared in all samples, however, all of characteristic bands for imidazolium ionic liquid disappeared in the samples when calcined at 550oC, which implied that the structure of imidazolium ionic liquid has been destroyed during calcinations.

FT-IR分析测试中3000cm-1~2700cm-1及1600cm-1~1400cm-1波数范围内的谱带被认为是饱和的C-H伸缩振动和芳环骨架振动，说明离子液体的存在，这些峰只在萃取样品中出现，可见键连的离子液体的结构在焙烧过程中被破坏。

Through the characteristic parameters, the system's real-time moment of inertia is given. Then golden section adaptive control law and logic derivative control law both based on moment of inertia are designed. The two kind of control laws are combined to control the attitude of spacecraft and their simulation results are compared with the ones of PD control law which is designed based on the certainly-known system model. The results show that this adaptive control law is effective on the kind of time-variable system studied in this paper.

根据特征模型的参数推算了系统实时的转动惯量，设计了基于转动惯量的黄金分割自适应控制器和逻辑微分控制器，将这两种控制器相结合对带有可伸缩挠性附件的刚体进行姿态控制，仿真结果与基于确知系统模型所设计的变系数PD控制器相对照，表明了该自适应方法控制一类时变系统的有效性。

The experimental results of temperature dependence of initial permeability and the change in magnetostriction coeffic.

由退火后试样的初始磁导率与温度的关系及磁致伸缩系数的变化结果表明，当有极少量的-αFe晶体相析出时，可明显改善合金的动态磁性能；当-αFe晶体相进一步析出时，可使合金呈现良好的恒导磁特性。

The red panda has pointed ears, stout limbs, and plantigrade feet (heel and toe touching the ground) with partly retractile claws and woolly soles.

小熊猫具有敏锐的耳朵，结实的四肢和有着部分伸缩自如的脚爪与覆满毛的脚底的跎行足。

The porterage machine hand of this text research has 5 freedoms degree, can carry out the bedrock to revolve, the rise and fall and stretch and shrinks of the arm, the wrist revolves to clip with the hand claw tightly.

本文研究的搬运机械手具有5个自由度，可实现底盘的旋转，手臂的升降及伸缩，手腕的旋转和手爪的夹紧。

The radial rectilinear stretching motion is firstly analysed, and its condition is deduced. Then two planetary gear mechanisms are assembled to realize the motion. In addition, the kinematics and dynamics analysis of arm mechanism is done, which provide the theoretic basis for the selection of servomotor and for holding the good dynamics and static performance of the clean robot.

首先对其末端执行器的径向直线伸缩运动展开分析，得出了实现该运动的必要条件，并采用两组行星轮系与连杆机构的组合形式来实现末端执行器的运动，此外还对该机构进行了运动学和动力学分析，为电机的选择以及控制净化机器人的动态性能和静态特性提供理论基础。

Taking advantage of retractility and time-delay characteristics of wavelet, this paper solves the problems of fixed resolving power and large redundance of the information caused by traditional sonogram analysis by choosing the scale of wavelet correctly.

本文将离散小波变换应用于蝙蝠回声定位叫声的分析中，利用小波的伸缩和时移特性，通过对小波尺度的适当离散，解决了传统语谱分析的分辨率固定、信息冗余量大的问题。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。