名词短语
中文翻译：穿孔率
同义词：
['perforation rate', 'penetration rate']
例句：
-
1. The steel plate has a high rate of perforation.
钢板的穿孔率很高。
-
2. The new drill bit has a lower rate of perforation compared to the old one.
新钻头相比旧钻头的穿孔率低。
-
3. The rate of perforation is directly related to the material's hardness.
穿孔率与材料的硬度直接相关。