Researchers created a mathematical model analyzing combustion waves — from slow flames to supersonic detonation. It yields accurate solutions and explains the transition from deflagration to detonation. The work paves the way for safer engines and improved protection against industrial explosions.

2026年2月21日 · 马琳 · 来源：tutorial资讯

old, new = await queue.get()

误区在于，很多人把这场转型理解成“学习某种爆红模式”，比如调改、胖改、会员店、硬折扣……但真正的分水岭在于是否有能力把商业模式从“以价换量、以费养利”，切换到“以货盘和服务赢心智、以前台毛利和效率养利润”。

3014295810http://paper.people.com.cn/rmrb/pc/content/202603/02/content_30142958.htmlhttp://paper.people.com.cn/rmrb/pad/content/202603/02/content_30142958.html11921 让公平正义可感可及

（作者为《故宫博物院院刊》执行主编）

say economists