名词
中文翻译：Unknown
同义词：
['hardness', 'stiffness', 'rigidity']
例句：
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1.The material has a high degree of hardness, which makes it suitable for use in industrial applications.
这种材料具有很高的硬度，适用于工业应用。
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2. The furniture is very stiff, and it takes some time to adjust to its new position.
家具非常僵硬，需要一些时间来适应新的位置。
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3.The car has a low degree of rigidity, which makes it easy to maneuver around tight spaces.
这辆车的刚性较低，这使得在狭窄空间中驾驶变得容易。