The Lockheed Martin SR-72, commonly referred to as "Son of Blackbird," [1] is an American hypersonic concept intended for intelligence, surveillance, and reconnaissance (ISR). Proposed privately in 2013 by Lockheed Martin as a successor to the retired Lockheed SR-71 Blackbird , the SR-72 was projected by Lockheed Martin executives in 2018 to ...

The latest in the Marantz line of award winning AV surround receivers, the SR-73 packs the punch of our SR-82mk2 and SR-92mk2 models in a more affordable package. Elegant, handsome styling houses state of the art surround sound processing and circuitry that allows total integration of your home audio video system.

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2015年12月23日 · 我的第一台AV功放，马兰士SR73，金色，日本原装，国行220V，1994年购于成都大发市场大昌店，成交价约3650元，是我当时三个月的工资了。 杜比定向逻辑时代的AV功放，其解码、收音、中置环绕驱动等等功能现在可以直接无视，但在左右主声道模拟部分就比现在的次时代全景声AV合并机好太多了。 就当成双声道HIFI功放用吧，和现在在售的马兰士三四千的双声道HIFI功放有得一比。 这款机器的声音评价，五年前，我在家电论坛发过帖子《点评我用过 …

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2018年8月23日 · 美国的这一武器计划名为“sr-73”，它的灵感来自于当时可以在30000米高空以3马赫的速度高速飞行的sr-71“黑鸟”侦察机。 根据计划，SR-73将采用无人驾驶技术，机身弹仓能够内置一定载荷的武器，高空高速越过任何国家的防空系统并采用自杀式袭击毁灭目标。

The Lockheed raven is a hyper-sonic reconnaissance aircraft made to replace the SR-71, it uses four turbo-scram-jet engines along with a hydrogen enhanced afterburner (press 1) pushing this aircraft from 20000 up to over 30000 mph or Mach 39.1.