“strain gauge”的概念、定义、习题解题方法及翻译-物理辞典

单词	strain gauge
释义	strain gauge A device used to measure a small mechanical deformation in a body (see strain). The most widely used devices are metal wires or foils or semiconductor materials, such as a single silicon crystal, which are attached to structural members; when the members are stretched under tensile stress the resistance of the metal or semiconductor element increases. By making the resistance a component in a Wheatstone-bridge circuit an estimate of the strain can be made by noting the change in resistance. Other types of strain gauge rely on changes of capacitance or the magnetic induction between two coils, one of which is attached to the stressed member
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物理辞典收录了3346条物理词条，基本涵盖了常用物理知识及物理英语单词词组的翻译及用法，是物理学习的有利工具。