英文缩写：dtl英文全称：Demonstration line中文音译：示范线1、工厂管理层对于示范线的变化也深表赞赏并在工厂掀起全面向示范线学习的热潮。

The management team gave great applause for the change of model line and the whole plant is enthusiastic about learning the model line.2、列车自动运行（ATO）系统在上海磁浮列车示范线的应用Application of ATO for Shanghai Maglev Demonstration Line3、建立高效薄膜光伏组件制造设备的示范线，如蒸发、快速热处理和化学池沉积等。Drive key process development and lead cross-functional process teams for PV panel efficiency demonstration;