弦器

Open Linear Encoder includes main grating scale and optical encoder head. This optical encoder head includes LED light source, optical detector module, and secondary phase-grating. LED light will pass through the plano-convex lens and produces parallel light. As the parallel light pass through secondary grating, the quadratic image display on the main grating scale. And the Moire interference will be reflected from the main grating scale and detected by optical detector module, as there is a relative shift between the main and secondary grating. From detecting the periodic sinusoidal signal with phase difference 90°, the period represents the grating pitch, using the counter to detect the number of periodic signals to get the displacement, and we can adapt the technology of electron subdivide further to increase the resolution of measurement .

反射式光学尺包括主光栅尺及光学读头，光学读头包含LED光源、光侦测器模组及相位式副光栅，LED光源经平凸透镜，产生平行光穿透副光栅后，副光栅之二次成像投射在反射主光栅尺上，当主、副光栅因相对运对产生之Moire干涉经主光栅尺反射至光电检测器，检出相位差90°之周期性弦波讯号，其周期代表栅距，因此可用计数器检出周期性讯号数目得到位移量，可进一步采用电子细分割技术提高解析度。

A hadron and string cascade model,JPCIAE,which is based on LUND string model,PYTHIA event generator especially,is used to study the photon production of 200 A GeV S+Au central collisions.

用建立在LUND弦模型特别是PYTHIA事件产生器基础上的描写极端相对论性核-核碰撞的强子和弦级联模型——JPCIAE研究了入射能量为200A GeV的S+Au中心碰撞中光子产生。

Vibration reduction effect of parametric oscillation of stayed cable with linear viscous damper under simple harmonic support motion is investigated in the paper neglecting cable-bridge interaction.

本文以斜拉索为研究对象，忽略索桥之间的耦合作用，研究在支座沿弦向方向的周期运动下，线性粘滞阻尼器对斜拉桥拉索参数振动的减振效果。

a compact solar pump-free libr absorption refrigeration system was set up with new-style devices such as falling film absorber, falling film evaporator, lunate thermosiphon elevation tube.

建立了小型太阳能热水型无泵溴化锂吸收式制冷系统，系统主要采用降膜吸收器、降膜蒸发器、弦月型通道热虹吸提升管等新型设计。

If mass of the wheel and its distance to the drum are selected adequately, the wheel and the rope between the wheel and a drum play a dynamic reducer to a single vehicle winding system.

采用合理的绳弦等参数，可以明显地降低提升容器的振动，即此时天轮等起着动力减振器的作用。

No sight or nor sight mark on the bow that help aiming are allowed; For barebow face and string walking is permitted.

不得使用瞄准器、弓的视域里有记号或其它有助于瞄准的器材，光弓表面及弦可以有自然纹路。

Harpsichord 羽管键琴:A stringed instrument resembling a grand piano but usually having two keyboards and two or more strings for each note and producing tones by the plucking of strings with plectra.

一种卧式竖琴型或梯形的键盘乐器，类似三角钢琴，但通常有两层键盘（部分为一层，及其个别亦有三层）和两套或更多的弦，通过羽管或皮制拨子（拨子连接一顶重器，一般为一根直立的木杆）拨弦，赖琴键内端推动发声。

Harpsichord羽管键琴】A stringed instrument resembling agrand piano but usually having two keyboards and two or more strings for each note and producing tones by the plucking of strings with plectra.

一种卧式竖琴型或梯形的键盘乐器，类似三角学钢琴，但通常有两层键盘(部门为一层，及其个别亦有三层)和两套或更多的弦(每一套发出差别音质的音)，通过羽管或皮制拨子(拨子连接一顶重器，一般为一根直立的木杆)拨弦，赖琴键内端推动发声。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。