current-凯发手机版

14-11-05 a man of chu learned to steer the boat from a boatman. at the beginning, he followed the boatman's instruction carefully, no matter whether it was to go ahead or back, turn left or right . one day, he had a try to steer the boat in slow current by h...

14-08-07 juvenile loggerhead turtles swim into oncoming ocean currents, instead of passively drifting with them, according to a study published august 6, 2014 in the open-access journal plos one by donald kobayashi from national oceanic and atmospheric admin...

11-08-10 asian markets have rebounded after the us federal reserve said it would keep interest rates on hold. 美联储宣布将保持利率稳定，亚洲股市因此反弹。 the decision by the us central bank to keep rates at current levels until at least 2013 helped stem one...

10-12-20 one of the requirements to keep trends in computer technology on track to be ever faster, smaller, and more energy-efficient is faster writing and processing of data. in the dec. 17 issue of the journal science, physicists at the technische universi...

10-09-26 returning david wagoner at the brim（边缘） of a deep pool before the rapids（急流，湍流） below that stone stairway（阶梯，楼梯） for days overhead the under-sheen of the other world turning darker lighter again still holding the first taste of rai...

10-06-28 when high-temperature superconductors（超导体） were first announced in the late 1980s, it was thought that they would lead to ultra-efficient magnetic（磁性的） trains and other paradigm-shifting technologies. that didn't happen. now, a university...

10-05-06 as fears grow that the loop current in the gulf of mexico could soon catch the oil slick（水面浮油） and drag it south towards coral reefs（珊瑚礁） in the florida keys, scientists are monitoring the situation closely with esa's envisat radar data....

10-04-14 in an electrifying（令人振奋的，惊人的） first, stanford scientists have plugged in to（对很感兴趣） algae（海藻） cells and harnessed a tiny electric current. they found it at the very source of energy production photosynthesis（光合作用） , a plan...

10-04-14 in an electrifying（令人振奋的，惊人的） first, stanford scientists have plugged in to（对很感兴趣） algae（海藻） cells and harnessed a tiny electric current. they found it at the very source of energy production photosynthesis（光合作用） , a plan...

09-10-28 an electric switch is often on a wall near the door of a room. two wires lead to the lamp in the room. the switch is fixed in one of them. the switch can cause a break in this wire, and then the light goes. the switch can also join the two parts of...