In order to recreate the magnetic shielding, they used ferrite plate and copper tape placed on the back of coils - this hindered transmitted energy 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
Copper and zinc in sludge extract were removed by improved ferrite coprecipitation process using lime milk as neutralization reagent.
采用改进铁氧体共沉淀法，用石灰乳溶液作中和剂，从污泥浸出液中去除铜、锌。
3
Adding different alloy combination of re, copper and titanium, then through gestation and nodulizing disposal, we got the fine texture of ferrite pearlite and spheroidal graphite.