(treated as sing. or pl) physical exercise in which opposing muscles are contracted to so that there is little shortening but great increase the tone of the in tone of muscle fibres involved
| 单词 | isometrics |
| 释义 | isometricspl noun(treated as sing. or pl) physical exercise in which opposing muscles are contracted to so that there is little shortening but great increase the tone of the in tone of muscle fibres involved |
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