The British weren’t alone in their hunt. Chileans, New Zealanders, and South Africans, among others, were also scrambling to source this strategic substance. A few months after the Pearl Harbor attack, the U.S. War Production Board restricted American civilian use of agar in jellies, desserts, and laxatives so that the military could source a larger supply; it considered agar a “critical war material” alongside copper, nickel, and rubber.1 Only Nazi Germany could rest easy, relying on stocks from its ally Japan, where agar seaweed grew in abundance, shipped through the Indian Ocean by submarine.2
在“读”取大脑功能状态方面，功能性超声成像则通过检测神经活动引起的微小血流变化，来推断脑区活动状态。不过，当前超声脑机仍面临诸多挑战，显著的一个物理局限在于“时间分辨率”。由于血液动力学反应滞后于电信号放电，功能性超声成像读取到的血流信号天然存在1-1.5秒的延迟，这限制了其在实时高频交互（如即时控制机械臂等）场景中的应用。，推荐阅读新收录的资料获取更多信息
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Лина Пивоварова (редактор отдела Мир)，更多细节参见新收录的资料
Трамп высказался о сроках войны с Ираном01:42