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Considering the characteristics of the push-pull air-cushion vehicle, this paper gives the definition of pace steering angle, that is taking the actual steering angle of the moving platform in one pace circle as a pace steering angle.

针对上述问题,结合推拉式气垫车的运动特点,文章给出了单步转向这样一个定义,即以车辆的一个步进工作循环下运动平台的实际转作为一个单步转向,气垫车的实际转向通过各单步转向累加而成。

In this paper, a spark advance angle adjusting system is presented. In the system, spark advance angle of engine with carburetor on which spark controlled ECU is installed can be matched, the spark advance angle was real time adjusted according to engine different speed and load to find the ideal spark advance angle.

提出了一种具有调节点火提前功能的控制系统,该系统能够在对化油器发动机进行简单改造加装点火控制ECU后对其点火提前进行标定,对发动机在不同转速和工况下的点火提前进行实时的调节,寻找到发动机在该转速和工况下的理想点火提前

In this paper we have point out the error of principle formula quoted by all literatures at home and abroad to measure the refractive angle and the method of V-prism, derive from beginning the right formula of measuring refractive index by the method of minimum deviation angle and the method of V-prism.

本文指出了测量光学材料折射率的最小偏向法和V棱镜法国内外所有文献的原理公式误差,重新推导了最小偏向法和V棱镜法测量折射率的正确公式。基于最小偏向法用精密测仅可以获得±3×10-6的折射率的测量精度,然而,这些文献沿用经典的测量原理公式却具有-4×10-4数量级的原理公式误差,因此导致错误的测量结果。

A pair of primers producing 614bp amplification fragment were designed based on the sequence of the C\|polyhedrin gene of Bombyx mori CPV,and the expected amplification products were obatined when genomic dsRNAs isolated from purified BmCPV,DsCPV and Lymantria dispar CPV were used as templates.Genomic dsRNAs isolated from Heliothis armigera CPV and DNAs from Lymantria dispar nuclear polyhedrosis virus and DNAs from midgut tissue of healthy Dendrolimus spectabilis larva did not yield any amplification products.The detection limit of purified DsCPV genomic dsRNAs was 1.0pg.

依据家蚕质型多体病毒质型多体蛋白的核苷酸序列设计一对引物,从纯化的DsCPV\,BmCPV和舞毒蛾质型多体病毒的基因组dsRNA可成功地扩增出长614bp的目的片段,从提取的健康松毛虫幼虫肠组织的DNA、舞毒蛾核型多体病毒基因组核酸、以及棉铃虫质型多体病毒基因组核酸,未能扩增出目的片段。

Base on the theoretical investigation, the calculation and simulation system forthe cutting adjustment parameters of the chamfering machine is developed accordingto the mathematical reverse solvement model.

根据这个结论,本文分析了不同的倒形式下,齿轮倒机刀具调整参数和倒几何参数之间的关系,推导出根据倒几何参数求解倒机刀具调整参数的数学算法。

As the forward velocity increasing, the windrowing angle would be decreased, but the effect of forward velocity on windrowing distance was not obvious. The windrowing angle and distance of multiple sugarcane stalks would be smaller than those of single sugarcane stalk, but the maximum range of windrowing angle and distance of multiple sugarcane stalks would be greater than those of single sugarcane stalk. In order to sugarcane stalks outward windrowing, holding height must be within ±100mm of height of sugarcane mass center. As holding height increasing, the windrowing distance would be decreased, but the effect of holding height on windrowing angle was not obvious.

随着夹持输送装置输送速度的增大,甘蔗铺放和甘蔗铺放距离也随着增大,随着机车前进速度的增大,甘蔗铺放是减小的,而前进速度对甘蔗的铺放距离影响不大;多根甘蔗的铺放和铺放距离要比单根甘蔗小,铺放和铺放距离最大极差要比单根甘蔗大;入口夹持点高度应在甘蔗质心高度±100mm范围内为宜,以保证甘蔗能向机车外侧铺放,随夹持高度的增加,甘蔗质心位于夹持点下方的距离增大,甘蔗铺放距离减小,而夹持高度对甘蔗铺放影响不大。

Prism series:Triangular prism, right-angled prism、Four prisms, pentagonal prism, half pentagonal prism ,polyhedron prism, Rotor drum prism, Simite roof prism,right-angled roof prism,Amici Frisms,Four pyramid reflectors,pyramid,V- prism, Wedge Prism/ Folds the axis Prism, Wedge-shaped prism ,Trapezius prism, Cube prism,Reference prism,Target, Changes the prism, Trapezius roof prism,V- roof prism,Compound/Abbe prismAnd other combination prism and so on

棱镜系列:三棱镜、直棱镜、四棱镜、五棱镜、半五棱镜、多面体棱镜、转鼓棱镜、斯密特屋脊棱镜、直屋脊棱镜、五屋脊棱镜、分光棱镜、四棱锥反射镜、锥、道威棱镜、楔镜/折轴棱镜、楔形棱镜、斜方棱镜、立方棱镜、参考棱镜、靶标、转向棱镜、斜方屋脊棱镜、道威屋脊棱镜、复合/阿贝棱镜及其他组合棱镜等。

Therefore, the electronic angle measurement also has code-degree angle measuring plate, grating-degree angle measuring plate and coding degree angle measuring plate combination, as well as the form of four kinds of dynamic measuring angle.

因此,电子测也就有编码度盘测,光栅度盘测和编码度盘结合测,以及动态测等四种形式。

That is to say, during the starting process of induction motor, hold-off angle of current has gradually decreased from initial value to zero. The method can always make the displacement angle less than thyristor's firing angle. So the voltage of the induction motor won't oscillate. Therefore, the oscillation of current, electromagnetic and speed can be eliminated during the soft-starting process of induction motor. This paper verifies the correctness of the method by simulation at first.

根据上述原因,本文提出了采用关断控制的新型控制策略,这种控制策略是使电动机在起动过程中的电流关断由某一初始值逐渐减小到零,利用该方法可以使感应电动机起动过程中的续流始终小于晶闸管的触发,这样续流的变化就不会引起电动机端电压的振荡,因而就从根本上消除了感应电动机软起动过程中的振荡现象。

The definition of generator angle is proposed in this paper. A new method to deduce generator angle by using rotor rotation signal is illustrated, which compares the phase difference between GPS timing pulse and RRS. Using only mechanical signal, the technique unfreezes limitation of zero-cross of generator terminal voltage during transient process. Automatic correction of initial generator angle is also proposed .

本文介绍了同步发电机绝对转子的定义,提出了一种测量绝对转子,进而获得高精度的相对转子的方法;此方法不使用机端电压过零整形脉冲,而是将机组键相脉冲与GPS 定时脉冲比相,并能够自动整定初始位置,因此,测量结果不受发电机运行状态的影响,能够在各种运行方式和扰动情况下获取高精度的绝对转子

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However, as the name(read-only memory)implies, CD disks cannot be written onorchanged in any way.

然而,正如其名字所指出的那样,CD盘不能写,也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口,替代木托盘,免薰蒸,符合欧盟、北美各国对出口货物包装材料的法令要求;喷涂钢托盘适用于重载上货架之用,托盘表面根据需要制作成平板状、波纹状及间隔形式,满足不同的使用要求。

A single payment file can be uploaded from an ERP system to effect all pan-China RMB payments and overseas payments in all currencies.

付款指令文件可从您的 ERP 系统上传到我们的电子银行系统来只是国内及对海外各种币种付款。