You will also write navigation to help the user mover forward and backward through the image list.
还要编写导航，帮助用户在图像列表中来回移动。
When adding the backward and forward button handlers, you will also see that this function is called to update the page from the event IDs we have been saving to the history stack.
添加后退和前进按钮处理程序时，还将调用该函数，根据保存到历史堆栈中的事件ID来更新页面。
Zend_Paginator also takes care of generating the page navigation links, which allow the user to move forward and backward through the result set.
Zend _ Paginator还负责生成页面导航链接，从而允许用户向前或向后浏览结果集。
Also, Samsung replaced the function keys with backward, forward, and refresh buttons, along with ones for toggling between windows and entering / exiting full-screen mode.
在功能键部份， Samaung采用与CR-48 相同的设计，具备上下页、更新页面、切换窗口、进入／跳出全屏幕模式等功能键。
The bed can be pulled up and down, but also rolled backward and forward with the crank to make space in the main room.
床可以拉起来了，而且还推出向后和向前的曲柄在主室的空间。
They also were measured while stepping as far as they could in three directions: forward, to the side and backward (the maximal step length test).
还要测试他们最大限度地向三个方向跨步，向前、向侧和向后(最大的步长测试)。
The combined algorithm also can provide the forward and backward level partitions which are very useful for analysis of the structure of project networks.
综合算法还能提供网络的正向和反向等级划分，这对工程网络的结构分析将是十分有益的。
The forward-backward difference can not only detect the static and motion regions but also detect the 3-2 Pull-Downed movie sequences.
对于检测到的电影序列，则进行3 2下拉恢复处理，输出电影模式的逐行扫描帧；
The knee and lower legs also able to rotate forward, backward and rotate 360 degree.
膝盖和小腿也能旋转前进，后退，旋转360度。
May be used in either forward facing mode or backward facing mode. It is also easy to install.
不论前向或后向安装模式，都是简易安装，妈妈也能轻松安装。
May be used in either forward facing mode or backward facing mode. It is also easy to install.
不论前向或后向安装模式，都是简易安装，妈妈也能轻松安装。
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