汉语翻译
【机】 内部二重分割式管或箱
英语解释：
名词 double-header:
- two games instead of one (especially in baseball when the same two teams play two games on the same day)
同义词：twin bill, doubleheader, double feature
详细解释：
double-header 也作 dou.ble.head.er
n.（名词）
Sports Two games or events held in succession on the same program, especially in baseball.
【体育运动】 连续两场：同一项目的连续两场比赛或两个项目，尤其用于棒球A train pulled by two locomotives.双头式列车：用两个机车牵引的火车