单词	extensometer
释义	extensometer noun ex·​ten·​som·​e·​ter ˌek-ˌsten-ˈsä-mə-tər  : an instrument for measuring minute deformations of test specimens caused by tension, compression, bending, or twisting Word History Etymology extension + -o- + -meter First Known Use 1887, in the meaning defined above Medical Definition extensometer noun ex·​ten·​som·​e·​ter ˌek-ˌsten-ˈsäm-ət-ər  : an instrument for measuring minute deformations (as of a test specimen) caused by tension, compression, bending, or twisting called also strain gauge
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