let-off meaning in English

扳发击锤
免罚
排水口；送经

Specification for determination of percent of let - off for archery bows
射箭术弓箭释放百分比测定规范
Dynamic parameter identification of the let - off motion in a high - speed loom
高速织机送经机构动态参数的确定
Standard test method for the determination of percent of let - off for archery bows
测定射箭弓射出百分比的标准试验方法
Automatic yarn let - off system which used change gear drive for regulating run - in values
采用交换齿轮调节送经量的积极式送经机构。
Let - off apparatus
放线装置

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