They were 200,000 miles above the Earth and closing in on their target when they needed to stir tanks containing vital oxygen and hydrogen.
The tests used in standards for evaluating smoke alarms were developed back in the 1980s. However, despite changes in building materials since then, smoke alarms remain reliable, says Chagger: "They still respond to all the main fires we get today."
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Physicists demonstrate how entangled quantum particles can improve the sensitivity of non-local, long-distance light phase measurements such as for telescope arrays observing faint astronomical objects
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一只宠物狗在她和妈妈的腿间转，给屋里带来生气。
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