若两个几何图形的形状相同，则称这两个图形是全等的图形。全等是相似的一种特例。当相似比为1时，两图形全等。
n. congruence
adj. congruent
misc. identically equal
在我看来，这项技术可以应用于军事、医药和公共安全等领域。
The technology, in my opinion, could have applications in such fields as military, medicine and public safety.
去年，国家游乐场安全计划在全国范围内走访了3000多个游乐场后，将国家游乐场的安全等级定为 “C” 级。
Last year the national program for playground safety gave the nation's playgrounds a grade of "C" for safety after visiting more than 3,000 playgrounds nationwide.
在文化、军事、安全等领域的交流也不断拓展。
The exchanges in culture, military affairs, and security have been increasing.
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