In order to recreate the magnetic shielding, they used ferrite plate and copper tape placed on the back of coils - this hindered transmittedenergy from getting close to human tissue.
他们将铁酸盐板和铜带置于线圈背部形成磁屏蔽，这样可以避免传输的电量过于接近人体。
2
Well, some of the energy is going to be reflected back, and some of it is going to be transmitted into the second medium.
有些能量会被反射回来，有些则会被传送到第二种介质中。
3
If the two media have really different densities, like air and water, then most of the energy is going to be reflected back, very little of it will keep going and get transmitted into the new medium.