Forward and backward movement knob The car raced on at top speed.

Use of backward movement ⅲ,ⅳ and mainly on two types of action to the first type of action based ⅲ.

向后的动作使用了Ⅲ、Ⅳ两个类型动作上且主要以第Ⅲ类型动作为主。

Hydraulic pressure vat achieves free forward and backward movement by the hydraulic pressure drive control system.

液压传动控制系统让液压缸实现自由进退动作，以便实现动力滑台的进给运动。

The analysis of the present situations of smoking habits in the hui minority primary school students in the backward region of Ningxia

宁夏贫困地区回族小学生吸烟习惯现况分析

Patterns, methods and experience obtained by foreign people ( provide us with good experience) when they promote the development of the backward region.

国外促进落后地区开发的模式、方法和取得的成功经验，为我国西部大开发提供了有益借鉴。

As a backward region, the western region needs to seek for the way of the economic boom urgently.

西部地区作为我国经济相对落后的区域，迫切需要寻找经济腾飞之路。

The endogenous imitation of the backward region is driven by positive externalities from trade.

不发达地区的内部相互模仿是由贸易的外在性所引起的。

The Change of the Function of the Government in the Backward Region and Its Realization of the Rural Market

落后地区政府职能转变与农村市场化

Any backward region that is isolated from the world and resists progress.

被认为孤立的、停滞的或落后的地方或位置。

It says its rule has bought much needed development to a poor and backward region.

他们称自己接管了一个继续发展的贫穷落后的地区。

The paper has made an approach to the control system, the backtracking method, the completeness of data and various table forms.

本文对控制系统、回溯方法、数据完整性以及多种表格自适应能力进行了初探。

Consideration about Booklist Database Created by Backtracking Method

关于书目数据库回溯建库的思考如何回溯建立体育图书书目数据库

Talking about the Influence of Librarians' Quality on Database Creation with Backtracking Method

谈人员素质对回溯建库质量的影响

The recursive backtracking method is used to search for every possible combination.

采用递归回溯方法实现组合优化的穷举搜索。

Homotopy Based Backtracking Method for Large-scale Process Simulations with Load Variation

大规模变工况流程模拟的回溯同伦法水电水利工程模板施工规范

Realizing Universities' Multi-level and Much School Area Distributed Network Class-arrangement System with Imprecise Backtracking Method

模糊回溯法实现高校多级多校区分布式网络排课

An intelligent backtracking method for solving combinatorial problems

求解一类组合问题的智能回溯法

While other styles like the breaststroke, front crawl, or backstroke can be swum easily even by beginners, the butterfly is a more difficult stroke that requires good technique to be feasible.

初学者也许能很容易地掌握蛙泳、自由泳或仰泳，但蝶泳却难得多，对游泳者的技术要求很高。

In dozens of experiments, scientists have shown that mixing related skills in a single practice session-new material and old, scales and improvisation, crawl and backstroke-seems to sharpen each skill more quickly than if practiced repeatedly on its own.

科学家在数十项实验中证明，相比于重复地练习某种单一技能，将相关的技能——如新内容和老内容、音阶和即兴演奏、自由泳和仰泳——融入同一个练习环节中，似乎能更快地增强其中涉及的各种技能。

Champion swimmers do not illustrate swimming in an exaggerated long, thin, on the side position in either crawl or backstroke.

游泳冠军们不会在爬泳和仰泳的一侧位置时使用夸张的长的，细的身体姿势。

The principal swimming strokes are the crawl, backstroke, breaststroke and butterfly.

主要游泳姿式有爬泳、仰泳、蛙泳和蝶泳。