However, due to absence of PyC at its surface, Si3N4 ceramic with gradient distribution of PyC (Gradient–PyC–Si3N4)

(has) not only

Draft 1

Draft 2

Published

good ability to absorb electromagnetic wave

good electromagnetic wave attenuation

shows strong attenuation of electromagnetic wave

but also demonstrates

the presence of less surface impedance break.

weak surface impedance break.

demonstrates weak surface impedance mismatch.