托福VOA听力：科学家测试太阳能动力.docx

智课网TOEFL备考资料托福VOA听力：科学家测试太阳能动力 摘要： 想让你的托福听力快速提高么?到底什么资料能帮助到你呢?想必这是很多刚刚备考托福的考生都想知道的问题，今天小编就为大家带来托福VOA听力：科学家测试太阳能动力，我们一起来看看。 今天小编就为大家推荐一款非常能够锻炼大家听力的资料 托福 VOA听力：科学家测试太阳能动力，相信很多考生都知道这个资料，一起跟小编来看看详细内容吧。 The satellite is called CubeSat. It is about the size of a loaf of bread. CubeSat was designed by a non-profit group, The Planetary Society. Bill Nye is the chief executive officer of the society. He says the satellite will test whether sunlight can be used as a propulsion force for space travel. 这颗卫星名叫CubeSat，大约有一块面包大小。CubeSat是由非盈利组织行星协会设计的，比尔奈伊是该协会的首席执行官，他说这颗卫星将测试是否可将太阳光用作太空飞行的推动力。 This may seem incredible at first, but it is nevertheless true that sunlight, or light, has momentum3 even though it has no mass. Photons have no mass but they still impart momentum when they strike an object.its a tiny, tiny amount of momentum. Nevertheless, if you have a big enough sail, as we call it, and a bus or spacecraft with a low enough mass, it will get a push. “这一想法最初看来不可思议，尽管太阳光没有质量，却有动量。光子没有质量，但它们在碰撞到物体时会传递动量，这是一种很微小的动量，但是如果风帆足够大，而飞船的质量足够小，就能获得推动力。” Scientists believe that this method of propulsion will reduce the cost of space exploration for universities and even private individuals. 科学家认为这种推动方式能减少大学甚至个人探索太空的成本。 The sail is 32-square meters long. It is made of Mylar, a material that is only one fourth as thick as human hair. Bill Nye says laboratory tests of the sail were successful. But he says testing the sail in space will be critical. 这个风帆有32平米大小，是由厚度只有人头发四分之一的聚酯薄膜材料制成。比尔奈伊说这种风帆的实验室测试很成功，但他说在太空中测试是非常关键的。 This first time out is a test. The big question, from an engineering standpoint not a physics standpoint, is getting the sails to deploy4. This is where everything goes wrong. “第一次启程是测试，这是个大问题，从工程的角度而非物理学角度来说，最大的问题是让风帆展开，这是容易出错的地方。” 以上就是小编为大家准备的托福VOA听力：科学家测试太阳能动力的部分相关内容，同学们可以点击下方下载按