1. spring balance：spring back 弹性回复 | spring balance 弹簧秤 | spring buffer 弹簧绶冲器
2. spring scale：springring 弹簧圈 | springscale 弹簧秤 | springscales 弹簧秤
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3. spring scales：spring ring 弹簧圈 | spring scales 弹簧秤 | spring tension 弹簧张力
4. spring dynamometer：spring constant 弹簧常数 | spring dynamometer 弹簧秤 | spring force 弹簧弹力