1.
The drag is a force per unit area of the layer.
拖力是流层单位面积的力。
2.
THE MECHANICAL CALCULATION OF THE MATCH OF TRAWL BOARD, TRAWL AND TRAWLER
网板、拖网、拖网船配合的力学计算
3.
Electrical Towage & Electrical Control
电力拖动与电气控制
4.
speed control technology of D.C.drive
直流电力拖动调速技术
5.
speed control technology of A.C.drive
交流电力拖动调速技术
6.
dogs straining at the lead
用力拖曳牵狗皮带的狗.
7.
feedback control technology of electric drive system
电力拖动反馈控制技术
8.
The act of drawing or pulling, especially the drawing of a vehicle or load over a surface by motor power.
拖拉拖或拉的行为，尤指用机动力将车辆或货物拖过一平面
9.
A small powerful boat designed for towing or pushing larger vessels.
拖船用作拖动或推动大船的大马力小船
10.
Procedures fof Determining the Rated PTO Power of SH-50 Tractors
上海-50拖拖机动力输出轴标定功率的制订
11.
The degree of resistance involved in dragging or hauling.
摩擦力拖拉中所受阻力的程度
12.
A New All-purpose PTO Device for Small 4-wheeled Tractors
小四轮拖拉机动力输出取力装置研制
13.
hauled myself out and raced towards the diving tower.
把自己拖出来，吃力地走了出来。
14.
The cat was dragging its broken leg.
那只猫拖着断腿吃力地走.
15.
Power take-off for agricultural tractors
GB/T1592-1986农业拖拉机动力输出轴
16.
She lugged the suitcase out into the hallway.
她吃力地将提箱拖进门厅。
17.
He dragged his tired feet as he walked, fig .
他走路时费力地拖着那双疲惫的脚。
18.
a horse used for plowing and hauling and other heavy labor.
用于耕作、拖拉和其它重体力劳动的马。