8月15日之sciam podcast--试听写
呵呵 第一次听写 好多单词听了好几遍还是听不出来 希望大家指正~
: X8 C: V" ~7 bThis is scientific American's 60 second science.i'am Steve Mirsky.Got a minute?
% A0 H, S3 w8 J* z4 ]NASCAR race on Tv now offers a view the drivers can never get.New software allows 6 ]# V4 g: J& v* b
the viewers to see the air flow around the speeding cars in real time. University of Washinton
" N0 g4 F( t$ w$ n) ]9 I5 ccomputer scientists had developed software that simulated way fire and smoke behavior in real time- V- X" B9 X; j# |
for training simulations for firefighters and for more realistic vedio games that one application * }3 s4 @- N, E/ b* V& n
wonder is NASCAR.Whole drastrack the technology was used to generate images of airflow for the first time
/ Z7 j) M) P8 qin later July for the all State four hundred NASCAR... Draft try calculates the airflow over the speeding cars
/ C/ X- Y% m5 |( C7 c! f3 Qand display these as green blue yellow or red stream behind the vehicles. The colors represents different speeds " i9 B+ V# E' [! A: \
and directions of airflow when two or more cars approach each other. The idea is for the view of get a fairy view for drafting 1 l7 ~! K' Q6 ?9 E& e
The strategy is tucking behind another car riding efficiently in a sleep stream. Drafting let drivers pick up speed and see' b9 D% _0 _% C4 j- X9 E
fewer after which they can really add it out.
! D$ z }! t4 V% B6 k/ H9 BThanks for the minute,for scientific american's 60 second science. I am Steve Mirsky.
