scanning current

例句：

1. 1. The device uses a scanning current to detect the presence of metals in the sample.
   该设备使用扫描电流来检测样品中的金属存在。
2. 2. During the experiment, the researchers used a scanning current to study the behavior of the molecules.
   在实验中，研究人员使用扫描电流来研究分子的行为。
3. 3. The scanner is capable of scanning currents at high speeds and high resolution.
   扫描器能够以高速和高分辨率扫描电流。