Altemating megnetic flux
[电] 交变磁场
🧩 词语组成解析
🗣️ 情景例句
it's a good picture.
那是一张好照片。
Wisdom is to the mind what health is to the body.
知识之于心灵，犹如健康之于身体。
suggested an idea on which he had been working for many years to the British Government and industrial circles.
他向英国政府和工业界提出了他研究多年的一项计划。