NASA came up with at least one solution to that problem. Marc Serota/Getty Images After NASA launches a shuttle into space, a slew of fuel and chemical waste remain on the launching pad and surrounding area. One compound in particular, trichloroethylene, also called "trike," takes a ...
NASA came up with at least one solution to that problem. Marc Serota/Getty Images After NASA launches a shuttle into space, a slew of fuel and chemical waste remain on the launching pad and surrounding area. One compound in particular, trichloroethylene, also called "trike," takes a ...
NASA came up with at least one solution to that problem. Marc Serota/Getty Images After NASA launches a shuttle into space, a slew of fuel and chemical waste remain on the launching pad and surrounding area. One compound in particular, trichloroethylene, also called "trike," takes a ...
4.B解析:由第四段中的“He also found that he couldn'tmove his legs so easily as before. "可知,答案选B5.D解析:由最后一段中的"NASA plans to send people toMars in the 2030s, and the twins' research could helpthem prepare for those space trips. "可知,答案选D 结果三 题目 If you ...
It can come from anywhere, but the inspiration for VELCRO came from nature.In 1941, George de Mestral was taking a nature hike in Switzerland one day. He noticed many burs(芒刺) sticking to his trousers. When he got home, he looked at one of the burs under his microscope. 2 . "...
It’s rumored NASA invented Velcro in space, but it’s just guilty by association as it’s often used during space missions. Electrical engineer George De Mestral came in from walking man’s best friend to find cocklebur fruits littering his dog’s coat. Pulling out a microscope, he found...
nautilus didn’t take the discarded shells of other organisms; she wanted to prove that it could grow a shell on its own. To properly observe the paper nautilus for an extended period and simultaneously study marine life in general, the power came up with the idea of inventing the gla...
R. LANNOM—NASA/JPL-CALTECH If astronauts ever land on Mars, they’ll need air to breathe. And they’ll need a way to get home. We’re now closer to both possibilities. That’s thanks to NASA’sMoxie.It’s a small device attached to the Mars Perseverance rover. It can separate oxy...
Flyte is a light bulb that can float (漂浮) and turn. Flyte has been popular with most people since it came out in January. The company also introduced a lot of similar products, including a planter, Lyfe, which came out in June. Little PrinterIt looks lovely and is called Little ...
Jules Verne Inventions That Came True批注本地保存成功开通会员云端永久保存去开通 8 Jules Verne Inventions That Came True (Pictures) Electric Submarines As made interactively evident by a retro-futuristicGoogle doodle, Tuesday would have been the 183rd birthday ofJules Verne. Had he lived to see ...