in contrast to the traditional microwave absorbing materials with the disadvantage of high density and immutable electromagnetic parameters conducting polymers a new type of microwave absorbing materials were introduced
针对传统吸波材料密度大、电磁参数不可变的缺点，介绍了一种新型吸波材料——导电聚合物
以上为机器翻译结果，长、整句建议使用 人工翻译 。