material-凯发k8官网

10-12-08 you've seen it in movies: the human-like, robot assassin（刺客） quickly regenerates its structure after being damaged beyond recognition. this terminator scenario is becoming less far-fetched as recent advances in structural health monitoring syste...

10-11-10 researchers at the university of maryland have proposed a scheme for detecting a concealed source of radioactive material without searching containers（容器） one by one. detection of radioactive material concealed in shipping containers is importan...

10-11-04 scientists at the u.s. department of energy's los alamos national laboratory and brookhaven national laboratory have fabricated（制造，组装） transparent thin films capable of absorbing light and generating electric charge over a relatively large ar...

10-11-01 researchers at the university of bristol reveal today in the journal nature that they have developed a seismological（地震学上的） 'speed gun' for the inside of the earth. using this technique they will be able to measure the way the earth's deep in...

10-10-14 the first galaxies formed before the universe was less than one billion years old and were much smaller than the giant systems including the milky way that we see today. so somehow the average galaxy size has increased as the universe has evolved. g...

10-09-24 computers, light bulbs, and even people generate heatenergy that ends up being wasted. with a thermoelectric device, which converts heat to electricity and vice versa（反之亦然） , you can harness that otherwise wasted energy. thermoelectric devices...

10-09-06 graphene（石墨烯，单层石墨） , a one-atom-thick layer of graphitic carbon, has great potential to make electronic devices such as radios, computers and phones faster and smaller. but its unique properties have also led to difficulties in integrating...

10-07-06 the world's biggest roman candle has got nothing on this. using super-high pressures similar to those found deep in the earth or on a giant planet, washington state university researchers have created a compact, never-before-seen material capable of...

10-04-14 the leaders of almost 50 countries have pledged to secure all vulnerable nuclear material within four years. 核安全峰会上，将近50个国家的领导人承诺，在未来四年之内严密保护核原料。 us president barack obama said the joint action（联合行动） plan agre...

09-10-25 the founders of the pirate bay have been hit a with new order to remove links to 凯发k8官网 copyright material. 网站the pirate bay的创建者接到命令，必须去除有凯发k8天生赢家一触即发官网的版权材料的链接。 founders of the pirate bay are considering an appeal. a dutch court has ordered them...