The Clepsydra漏壶The clepsydra is an instrument for time calculation in anaent China.The ancient people, upon finding that water in a pottery often leaked out dro...

这是“太极一号”卫星（8月17日摄）。

听得别人谈论新能源汽车的时候，常常听闻P0、P1、P2、P3、P4、P13、P34等，常常听闻ISG、BSG，究竟是什么意思呢？

激光加工是利用激光与物质相互作用的特性，将激光束探讨到细小的空间，利用高密度的激光能量，对材料实行加工。

BBC News – Shares in Japanese gaming company Nintendo jumped by nearly a quarter on Monday following the success of its new Pokemon Go smartphone game. It debut...