短信爆炸的背后是我们如何看待移动设备的根本转变。
Until now, the accepted view has been that our ancestors underwent a "creative explosion" around 30, 000 to 40, 000 years ago, when they suddenly began to think abstractly and create rock art.到目前为止广为接收的观点是,我们的先人在距今3万到4万年前经历了一次“创造的爆炸”,当时他们突然开始进行抽象思考,并且创造石刻艺术。
Using high speed schlieren photographs the microstructure of flame front surface in gas explosion was studied from the microscopic view.通过高速纹影图像从细观角度详细研究了不同传播条件下瓦斯爆炸火焰前锋的细微结构。