lead 1-in plate引入板
lead 1-in winch船坞绞车
lead 1-in trolley进坞拖车
lead-in insulator[电] 引入绝缘子;引入线绝缘子
lead-in wire[电] 引入线;翻译;引八线
lead-in conductor引入导线
lead-in brush引入电刷
lead-in roll引纸辊;引入辊
N-COUNT(可数名词) A lead-in is something that is said or done as an introduction before the main subject or event, especially before a radio or television programme. 前奏; 开场白