“People were dying and we didn’t know why,” Cornman told me. “We didn’t understand the physics of why the planes were crashing.” The deadly gusts were thought to be blowing in from the ocean or from thunderstorms outside the airports. But the danger turned out to be right above them. In the late seventies, researchers at NCAR and the University of Chicago discovered that the crashes were caused by microbursts—sudden, violent downdrafts. In a microburst, a storm cloud dumps cool air and rain straight down, like water from a broken awning. The air spreads horizontally after it lands, so the pilot thinks he’s flying into a headwind at first. He lifts the plane’s nose slightly and decreases the engines’ thrust. Then the downdraft hits, followed by a vicious tailwind, sending the aircraft to the ground.
A Spanish restaurant chain called The Mafia Sits at the Table may soon have to change its name after the country’s patent and trademark office heeded objections from the Italian government and ruled that the brand’s nomenclature ran counter to “both public order and morality”.
Внешность 51-летнего Андрея Губина в интервью Собчак вызвала споры в сети。业内人士推荐体育直播作为进阶阅读
40-летняя учительница 22 раза изнасиловала школьника в своей машине02:00，这一点在哔哩哔哩中也有详细论述
Apple отрекламировала Microsoft14:57。PDF资料对此有专业解读
PBR/Light Transport