位置保持

Then considering earth rotation and 6-DOF movement,the expression of absolute velocity and absolute acceleration for vehicle centroid are deduced by using transform of vector derivative.

与陆基固定垂直发射条件不同的是，潜射弹道式飞行器是在运动着的潜艇这样的动基座上进行发射的，为了保持发射时潜艇的可操纵性以及发射后使发射艇尽快离开发射位置，发射艇要有一定的速度。

Press accelerator pedal all the way to the floor and count out loud 3 seconds.

确认"0"或"1"后，漫漫的踩油门踏板到最大位置，保持 3 秒以上！

And he added:'I know that it is hard to have a spot.

他又说：我明白保持一个位置是很困难的。

And we designed an air-driven rotary actuator with vacuum fixtures to place and hold the die-cast parts, and an assembly station.

同时我们设计了一个气动旋转驱动装置，其用来固定真空夹具的位置和保持模具部件，装配单元。

This method can be designed in the preset lighting caliber, they will maintain higher smoothing properties of the DOE, equivalent to the design phase of the DOE on improving the lighting caliber tolerance and anti - horizontal position error capacity.

这种方法可以设计在预定的照明口径范围内都保持较高匀滑性能的DOE，相当于在设计阶段就提高了DOE的照明口径宽容性和抗横向位置误差的能力。

The monitoring data showed that, even in the coldest day of January, the natural temperature in the ARGO hail can remain at ~0℃ and restrain the day/night temperature variation and position differences within 3℃.

监测结果表明，即使在羊八井最寒冷的1月份，大厅内自然环境下的温度也保持在0℃左右，在白天或夜晚的和不同位置的温差都在3℃以内。

He maintained that right-knee position from address all the way to the top of the backswing.

他保持住右膝关节的位置一直到上引杆至顶点。

He maintained that rightknee position from address all the way to the top of the backswing.

他保持住右膝关节的位置一直到上引杆至顶点。

A centrally located ball-shaped H2 meter keeps track of hydrogen consumption.

位于中心位置的球型氢米的氢气消费保持跟踪。

It was then I decided to befriend the boy.

从那时起我发现我期待了他之前的位置就决定要和这个男孩保持友好。

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。