求翻译：许多研究表明，单一损耗机制的吸波材料往往只在某一频段具有较好的吸波性能,而将不同损耗机制的两种或多种吸波材料以固相复合,或形成核-壳结构,或制成多层吸波涂层等方式组合起来时，材料的整体吸波性能得到了改善。是什么意思？

Many studies have shown that a single loss mechanism absorbing materials are often only in a band with good absorbing properties of different mechanisms of loss of two or more absorbing material to solid-phase composite, or the formation of core - shell structure or made of a multilayer absorbing co

Many studies indicate that a single mechanism of loss wave-absorbing materials are often in a band with a better wave-absorbing performance wear, and the different mechanisms of two or more wave-absorbing materials in the composite, or a core-shell structures, or made into multi-level wave-absorbing

Many research indicated that, loses the mechanism the absorbing material often only to have solely in some frequency band well attracts the wave performance, but will be different loses the mechanism two kind of or many kinds of absorbing materials by the solid phase compound, either shape coring -

Many studies have shown that single loss mechanism of absorbing material is often only when a band has good absorbing properties, and various loss mechanisms of two or more wave-absorbing materials to solid-phase composite, or forming a core-shell structure, or when made from multi-layer radar absor

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