field-free emission current

例句：

1. 1.The field-free emission current is a crucial factor in determining the performance of the device.
   无场发射电流是决定该设备性能的关键因素。
2. 2. The researcher found that the field-free emission current was significantly reduced by the new technology.
   研究者发现，新技术显著降低了无场发射电流。
3. 3.In order to improve the efficiency of the device, the team focused on reducing the field-free emission current.
   为了提高设备的工作效率，团队专注于减少无场发射电流。