Pemf
[医][=pulsating electromagnetic field]脉冲电磁场
🗣️ 情景例句
He insists that politics will affect the human life deeply.
他坚持说政治会对人类的生活产生深远影响。
His eyes will pop out in astonishment.
他因为害怕而瞪大了眼睛。
As a shipbuilder, Cockerell was trying to find a solution to the problem of the wave resistance which wastes a good deal of a surface ship's power and limits its speed.
作为一个船舶技帅，科克雷尔在寻找解决波浪阻力的方法，因为波浪阻力浪费掉了船在水面行驶的大量动力，从而限制了船的速度。