active length

• 工作长度

active length的用法和样例：

例句

1. The results show that the increase of the gap length may decrease the maximal seismic load applied on the restrainers.
   结果表明，不工作长度的增加可以降低防止落梁装置承受的最大地震荷载。
2. Analysis of the handing method and the electric method for measuring work length of root canals.
   手感法和电测法确定根管工作长度的研究。