penetration基本解释
n,渗透;突破;侵入;洞察力,同近
The floor is sealed to prevent water penetration..地板加了密封涂料防止渗水。
穿入;渗透英释nnthe act or process of making a way into or through sth
penetration rate,焊透率;穿进速率;进尺速度.短语