1.
up-and-down movement
垂直往复运动;垂直运动;升降运动;上下运动
2.
Example of attachment of the automatic cylinder upon up and down.
例如连接自动圆筒状汽缸上下运动。
3.
an arm exercise performed lying face to the floor and pushing the body up and down with the arms.
面部朝下，身体在手臂的支撑下作上下运动。
4.
To move or bob up and down jerkily and rapidly.
急动，蹦蹦跳跳突然地且迅速地上下运动或摆动
5.
In addition to the up-and-down motion generated, surface waves also have a side-to-side motion.
除产生上下运动外，面波还会发生侧向移动。
6.
workstring reciprocation
工作管柱上下往复运动
7.
upper and lower motor lesions
上位和下位运动损伤
8.
Characterized by or exhibiting an alternating upward and downward movement.
一上一下的上下的交互运动为特征的或表出现上下的交经运动的
9.
(sports) with hand brought forward and down from above shoulder level.
（体育）手上举，然后由肩的上方向下运动。
10.
Now he took off the blazer and slung it over his shoulder.
于是他脱下运动衫搭在肩上。
11.
We are to hold a sports meet next Saturday morning.
下星期六上午我们打算开运动会。
12.
Cursor key ( up , down , leave , right ) - control movement of the camera
Cursorkeys（上、下、左、右）-控制摄像机的运动
13.
Technically, both players are on a level, ie of the same standard.
双方运动员在技术方面不相上下.
14.
From the reform movement on,they thought aboutreforming to save the nation from extinction.
维新运动起 ,变法救亡之风遍上下 ;
15.
The Leser Field Equations of Motion with pumped Upper and Lower Lerels
上、下能级都有泵浦的激光场运动方程
16.
Study on the Movement in Which the Educated Youth Went to the Mountain and Countryside during the Great Cultural Revolution;
“文革”时期知识青年上山下乡运动研究
17.
ANALYSIS ON MOTIONS AND GREEN WATER OF FPSO IN SHALLOW WATER WITH NON-COLLINEAR ENVIRONMENTS
浅水非共线海况下FPSO运动与上浪分析
18.
The compensating descending motions normally occur over a much larger area than the ascending motion.
补偿下沉运动通常出现在比上升运动大得多的区域上。