摆动

Two pairs of chutes and holes on the cleaning base and the brushes form the double chute swing mechanisms by the connection of an axis and cause the brush to cling to the wall surface to clean by the friction feedback, thus achieving effective cleaning when walking error occurs and the pipe section changes, furthermore, the larger the friction on the wall surface is, the larger the forward pressure on the wall surface is, therefore, the dirtier the wall surface is, the higher the cleaning efficiency is.

清扫底座与刷子夹上的两对滑槽和孔通过轴的连接形成双滑槽摆动机构，并通过摩擦力反馈使得刷子能够紧贴壁面进行清洗，从而在出现行走误差和管道截面变化时都能够有效清洗，并且壁面摩擦力越大刷子作用在壁面上的正压力越大，因此壁面越脏时清扫效率越高。

The model of 3-dimensional stretching vortex ring of turbulent elliptic jet in crossflow are discovered for the first time. It is pointed out that in the evolution of turbulent jet in crossflow the 3D vortex rings, which stretching, distorting, swing in transverse direction and twisting around the stream-wise, play the leading role in the large-scale coherent structures. The counter-rotating vortex pair observed in the literature is in fact the head of the 3-dimensional vortex ring.

首次发现和提出了湍流横向椭圆射流的三维拉伸涡环模型，指出在其大尺度拟序结构中真正占主导作用的是拉伸、扭曲、沿流向扭动、展向摆动和绕x轴的转动的三维涡环，在众多实验和文献中观察到的反向涡对其实是由三维涡环头部组成。

The most important are as follows: Detection of type: valve stem seal leakage test and test; water valve tightness test; switch tightness test; the take-off safety valve Test; Detection Object: valve, the cut-off valve , safety valve, throttle valve, check valve, swing check valve, ball valve, regulating valve and other hollow pump body, valve body and housing, etc.; way valve connection: flange connection, threaded connection, welding connection; detection medium.

最重要的有以下几种：检测类型：阀门密封性试验及阀杆泄漏性试验；水中阀体密封性试验；开关密封性试验；安全阀的起跳值试验；检测对象：闸阀、截止阀、安全阀、节流阀、止回阀、摆动式逆止阀、球阀、调节阀和其他中空的泵体、阀体和壳体等；阀门联接方式：法兰联接、螺纹连接、焊接联接；检测介质。

Frequency variation process and unit's swing process after fault can be closely simulated.

故障后的频率变化和机组摆动过程可确切地仿真。

Lateral oscillation arc welding, high-speed-rotating arc welding, twin-wire welding, and ultra NGW can all assure the fusion of side wall and improve the oppearance of weld in relatively small welding variables.

横向摆动电弧、高速旋转电弧、双丝焊和超窄间隙焊4类方式都可以在较小的焊接规范下，保证侧壁熔合，改善焊缝成形，防止焊接裂纹。

The most striking is that the river "trout fly fishing,"钓者only stand and legs deep water, holding a fishing rod before and after a sharp swinging light.

最引人注目的，就是河中&飞蝇钓鳟鱼&，只见钓者站在深及腿部的水中，手持钓杆轻巧的大幅度前后摆动。

On applying the theory of differential geometry, the research shows the procedure for determining the required cutter path for cutting conical cam profile using a NC milling machine based on the analytical profile expression of conical cam with oscillation conical roller follower or with a translating conical roller follower established in 3D space. The analytical expression of cutter path is provided for a tapered endmill cutter, whose size may be identical to or smaller than that of the conical roller.

应用微分几何理论，以在3维空间所建立的圆锥滚子摆动从动件和直动从动件圆锥凸轮机构凸轮廓面的解析表达式为基础，对数控铣床加工圆锥凸轮廓面所需刀具轨迹方程的建立方法进行了研究，根据所采用的锥形刀尺寸等于或小于圆锥滚子尺寸的情况，推导出相应的刀具轨迹方程的解析表达式。

When operated as a bulldozer, a pair of endless track roller frames are free to oscillate up and down about a horizontal axis passing Lhrough the bulldozer's main frame for improved traction and grading characteristics, reduced stress on the tractor stmcturc, and a more comfortable ride for the operator.

操作时，作为一台推土机，一副没完没了的轨道滚子帧都可以自由摆动起来下降了约横轴及格lhrough推土机的主体框架，为提高牵引和等级特征，减少应激对拖拉机stmcturc ，更舒适游戏机经营者。

Although these combined relative error γ.1%, in order to obtain more precise measurement results, it should be pay attention for the level of the torsion pendulum, the uprightness between the photoelectric doors and the block rod, the location of the being measured substance, the similarity of the shape and the quality between the standard object and the being measured object, human factors and so on.

利用扭摆法测量物体的转动惯量，受到待测物体摆动周期测量误差、装配位置偏移误差和轴线倾斜误差的影响，虽然这些相对误差总合γ。1%，为了使测量结果是加精确，实践中应该注意扭摆的水平、光电门与挡光杆的垂直、待测物重心的位置、人为误差的影响以及待测物与标准件形状、质量的相近性等。

The specially designed arm socket prevents unnecessary wobble from the arm while providing full control over the arm's torque.

特别设计的手臂插座防止不必要的摆动手臂，同时提供对手臂的转矩的完全控制。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了