约瑟夫·傅里叶：1768年3月21日—1830年5月16日，法国数学家、物理学家，提出傅里叶级数，并将其应用于热传导理论与振动理论。年幼时，父母双亡；1789年，他跟随拿破仑东征 ...

Stricter testing conditions mandated by China's drone reliability standard have yielded significant safety improvements, with industry analysis revealing a 25 percent increase in mean time between ...

TOKYO, July 7 (Xinhua) -- Monday marks the 88th anniversary of the beginning of China's whole-nation resistance war against Japanese aggression. However, 88 years later, the truth of the historic ...