pulling force拉力;牵引力;引力;牵力 pulling machine拉丝机;拨桩机;起油管装置 pulling stress拉伸应力 pulling cable牵引索 pulling power牵力;牵引功率 英语例句库 1.They have just beenpullingour legs. 他们是跟我们开玩笑。 2.The pupils arepullingup the weeds. ...
A. sun B. star C. moon D. planet 相关知识点: 试题来源: 解析 C。解析:He realized that there must be a force pulling the apple towards the earth. This force, he hypothesized, was the same force that kept the moon in its orbit around the earth.反馈 收藏 ...
The gravitational pull of the earth (the force which pulls everything towards the ground) is like a rope which keeps the satellite from flying away. Everything that goes up has to come down. It is only a matter of time before a satellite comes back to the earth. As time goes by the...
These could be very useful in space as tractor beams, although NASA's upcoming efforts at manipulating asteroids or comets will rely on the gravitational force between a space ship and the celestial object. The gravity tractor and enhanced gravity tractor efforts will be able to move a near-...
Product name: Pulling Force Strong Rare Earth Magnets Round Neodymium Fishing Magnet Shape: Pot or round Direction of magnetisation: Through the thickness Type of coating: Nickel Grade: N35 Attraction (KG): 2KG/5KG/10KG/18KG/60KG/150KG or customized Tolerance in size:...
Designed for exceptional flexibility and realism, Sweden's Dynamic Flight Simulator (DFS) is believed to be the first fourth-generation device―a ground-based system capable of pulling gs and replicating modern tactical-aircraft flight conditions―deployed by an air force. Such simulators are a ...
Hydraulic oil flows to the winch through the pressure line. The hydraulic winch converts hydraulic oil flow and pressure into pulling force. Hydraulic oil is returned to the system’s hydraulic oil tank via the return line. Technical details ...
2017年考研真题(英语二)阅读理解 Section Ⅱ 展开全部 英英释义 Noun 1. the act of pulling; applying force to move something toward or with you; "the pull up the hill had him breathing harder" "his strenuouspullingstrained his back"
Zhang Zhenghe, a professor at the College of Economics and Management at China Agricultural University, said specialty industries have become a major driving force for China's rural vitalization. Zhang said the country needs to foster more specialty industry clusters in rural areas, through...
阅读下列短文,从所给的四个选项中,选出最佳答案 Gravity holds us so close to the earth's surface that nobody can jump more than a few feet into the air with the force of gravity pulling him down . It t