a balance that measure weight by the tension on a helical spring
spring scales的用法和样例:
例句
That is, the reading of the spring scale has been increased by an amount equal to the buoyant force. 这时弹簧秤称得的数值增加到和浮力相等的量。
The improved Jolly spring balance has the advantages of beautiful shape, easy for adjusting, good stability and high precision. 改进后的约利弹簧秤外形美观,便于调节,稳定性好且精度高。