查询词典 teeterboard

Holding the bow is like a teeterboard supported by thumb as the pivot and the cooperated forcing of forefinger and little finger produces a moment M.

国内近期出现了用物理模型来研究小提琴运弓问题的尝试。

After feasibility analyzing and parameter optimizing , a teeterboard pattern MEMS permanent magnet bistable structure supported by torsion and cantilever beam was fabricated by sacrificial layer technology of non - silicon surface micro fabrication .

在进行理论分析证实可行性和模拟仿真优化参数后，利用非硅表面微加工方法中的牺牲层工艺制备了一种扭梁悬臂梁支撑的扭摆式MEMS永磁双稳态机构。

This system adopts P89V51RD2 microcontroller as the core, the stepper motor as the drivers which is driven by L298 chip, the rudder to change the veer and the angle sensor to detect the transformation of the teeterboard. The infrared detection module is designed fore-and-aft the car.Via taking count of the pulse infrared photoelectric code board determine the location on the board. Infrared remote control keyboard boot the system into operation, and liquid crystal display information about relevant parameters.

本系统采用P89V51RD2单片机作为控制系统的核心，采用步进电机作为电动车驱动电机，以L298为驱动芯片，配以舵机改变转向，使用角度传感器检测跷跷板的角度变化，在车的前后端设计了红外黑线检测模块保证电动车顺利驶上板以及在板上笔直行驶，红外光电码盘通过脉冲计数确定电动车在板上的位置，红外遥控键盘启动系统开始运行，液晶显示相关参数信息。

Holding the bow is like a teeterboard supported by thumb as the pivot and the cooperated forcing of forefinger and little finger produces a moment M. The "P-x-M Line Method" shows when playing a down bow, M increases with x and gradually changes its direction and this process is determined by P, the gravity and barycenter of bow. The "P-x-F Plane Method" shows that the most force-saving bowing path should locate in the lower part of this plane. The analyses of "Helmholtz Motion" and "Schelleng Diagram" indicate P and its range is in direct ratio with volume, velocity of bow, the approaching degree of the bow to the bridge and has some relationship with the quality of string and bow.

国内近期出现了用物理模型来研究小提琴运弓问题的尝试本文第一部分首先指出握弓类似于一个以***(F3)为支点的跷跷板，主要以食指(F1)和小指(F2)的施力配合，产生握弓力矩M；随后用"P-x-M直线法"证实：演奏下弓是M随的***而逐渐增大并转换方向的***，此***取决于P、弓的重力和重心；并首创"P-x-F平面法"，在x，F1，F2空间中证实：省力的运弓路径应在该平面中处于较低的位置第二部分通过分析"赫尔姆霍茨运动"和"Schelleng图表"指出：P及其变化范围和音量、弓速、弓与琴码的接近程度成正比，并与琴弦和弓自身的性质有关

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。