driving current的用法和樣例：
例句
- An ambient field aids the magnetization from the exciting current.
背景場(chǎng)加強了激勵電流的磁化強度。 - The curve of the relation between the amplitude of the ultrasonic wave and the excitation current of the electromagnetic field was obtained by experiments.
為此設計了確定最佳磁化強的試驗方案，通過(guò)試驗得到超聲波幅值隨電磁場(chǎng)激勵電流的變化曲線(xiàn)。
