名词
中文翻译：穿透深度
同义词：
['penetration depth', 'penetration depth of material', 'penetration depth of welding']
例句：
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1. The drill penetrates the concrete at a depth of 2 meters.
钻头以2米深的深度钻透混凝土。
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2.The new technology can increase the penetration depth of oil by 20%.
新技术可以提高石油的穿透深度，提高20%。
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3. The engineer used a special tool to measure the penetration depth of the weld.
工程师使用特殊工具测量焊缝的穿透深度。