active line length

例句：

1. 1. The company's new product is designed to have an active line length of 20 meters.
   该公司的新产品设计的有效线路长度为20米。
2. 2.The engineer used a laser to measure the active line length of the circuit board.
   工程师使用激光测量电路板的有效线路长度。
3. 3.In order to improve efficiency, the manufacturer has increased the active line length of their machine tools.
   为了提高效率，制造商已经增加了机器工具的有效线路长度。