The telescopes sift through the background cosmic radiation to find spots where it has been slightly perturbed as it passes through extremely hot gas, a hallmark characteristic of galaxy clusters.

南极天文台三大观测宇宙的天文台之一，旨在检测由宇宙大爆炸而产生的大量存在于微光辐射中的扭曲现象，利用天文望远镜对宇宙射线背景进行筛选，再利用星系群的特点确定一个点，即当宇宙射线穿过极热气体时会产生轻微混乱，混乱的那一刻就是所要找的那个点。

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Characteristic: While she has no hot figure, her looks are considered "healing" - her presence and beauty can comfort the heart.

特点：虽然没有火辣的身材，但她却有着“治愈系”的外形——她的一颦一笑都能够温暖人心。

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Compared to atmospheric pressure hot water boiler, operational principle and characteristic of vacuum hot water boiler are narrated.

叙述了真空热水锅炉的工作原理、特点以及与常压热水锅炉的性能比较。

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