前后移动

Focus on the dot in the center and move your head backwards and forwards.

将视线集中在中心的小黑点，然后前后移动你的头部，你发现了什么？

He gathered slowly, moving backwards and forwards through the bushes, but always keeping up with her.

他慢慢地采摘着，在灌木丛中前后移动着，但是却总能跟上她的脚步。

The ground is forced to move forwards and backwards as it is compressed and decompressed.

在被加压和减压的时候，地面被迫前后移动。

To move forwards and backwards as it is compressed and decompressed.

地面在被压缩解压的作用下被迫前后移动。

When car happening collides, cabin assembly can move with around inside and pass its lower suck can sleeve and bedspring draw energy and amortize, reduce the acceleration when the member that multiply collides thereby, enhance the security of the car.

当汽车发生碰撞时，内舱总成可以前后移动并通过其下部的吸能套筒和弹簧吸收能量并缓冲，从而减小乘员碰撞时的加速度，提高汽车的平安性。

ADAMS. According to a function with STEP5 has features of continuous first and second derivative,the higher degree of approximation,etc.,we test and verify feasibility of fore-and-aft movement and turning gait of the robot. Thus a solution of the Snake-like robot motion under the ADAM...

ADAMS软件对蛇形机器人进行了从样机模型建立到运动学仿真与分析等一系列研究；并根据STEP5函数具有一阶与二阶导数连续、较高的逼近程度等特性验证了蛇形机器人前后移动和左右转弯步态可行性；找到了一种在ADAMS环境下求解机器人运动的方法，简化了理论计算，提高了设计效率。

The frame on which a gun carriage moves forward and backward.

炮底架：炮架在其上前后移动的炮底架

Stare at the black point,then move your head to front and back,see what will happen....!!!

盯着看中间的黑点，然后慢慢将你的头前后移动，你看到了什么。。。。。。！！！

A movable plane is built that is perpendicular to the projection of sightline in xz plane; a radial from camera position to mouse point is built and the mouse wheel is used to control the forward and backward movement of the movable plane along the sightline direction; the intersection point of the mouse radial and the movable plane can be moved to any position in 3D space by moving the moveable plane; the coordinate of the intersection point of the radial and the moving plane is calculated, taken as the new coordinate of the object to be moved which is added into the romance pipeline, and the object movement can be implemented.

论文摘要：为优化虚拟三维管理领域的物体移动操作，实现利用鼠标完成物体在三维空间中任意点的移动过程，引入可移动平面的概念，在三维空间建立垂直于视线在xz平面投影的可移动平面；建立1条从摄像机位置到鼠标位置的射线，由鼠标滚轮控制可移动平面在视线方向上的前后移动；通过移动可移动平面，使鼠标射线与可移动平面的交点可以到达三维空间中的任意位置；计算射线与可移动平面的交点坐标，将其作为待移动物体新坐标放入渲染流水线，从而完成物体移动。

To 18 golds proportions, zinc base alloy material quality, according to original vehicle entire simulation manufacture, silver, 4 leaf of vehicle doors and baggage cabin door, even is the roof louvre window lap all may move, the roof louvre window is double-decked, the steering wheel and the front wheel change the linkage, the front-row chair may around move, arranges the catch rod to be possible to move even all may open, the ultra fine paint surface works, the detail decides all perfect principles!

1比18黄金比例，锌合金材质，按原车全仿真制造，银色，4扇车门、引擎盖和行李舱门，甚至是天窗盖板都可以移动，天窗还是双层的，方向盘和前轮转向联动，前排座椅可前后移动，排档杆可拨动，油箱盖甚至都可以打开，超精致的漆面做工，细节决定一切的完美主义！

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。