sx = 1024 / 3840 ≈ 0.2667
据彭雷介绍，通过相控阵换能器，用多个超声发射单元，通过精确控制时间和相位，理论上能够隔着颅骨对特定小区域（4-8毫米范围）进行刺激，靶向调控脑区的深度可达6-7厘米。这意味着它可能作用于丘脑、海马、基底节等深部结构，而这些区域恰恰与帕金森、抑郁症、癫痫以及慢性疼痛等疾病密切相关。
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Европеец описал впечатления от дворца в России фразой «рот открылся и не закрывался»17:34
That’s why trains have a trick called slack action. If you've ever been near a train as it starts moving, you probably heard a bunch of cracking that moves down the line of cars. The reason is that the connection from one car to the next is loose. So when the locomotive pulls the first car, the second car remains stationary until the slack is gone. With this trick, the locomotive can get one car moving at a time and add it to the group of moving cars. Pretty smart!