名词
中文翻译：初级屏蔽
同义词：
['primary protection', 'primary barrier']
例句：
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1.The primary shielding is the outer layer of the spacecraft that protects it from external radiation.
初级屏蔽是宇宙飞船的外层，它保护飞船免受外部辐射。
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2.In this case, the primary shielding is the thick steel plates that are bolted to the floor.
在这种情况下，初级屏蔽是固定在地板上的厚钢板。
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3.The primary shielding is designed to absorb and disperse energy waves before they reach the sensitive equipment inside the spacecraft.
初级屏蔽设计用来吸收和分散能量波，以免它们到达宇宙飞船内部的敏感设备。