With the seawater salinity increasing, the degradation rate constant of substrate drops.
随着污水中海水比例的增大，基质降解速率常数逐渐变小。
The addition of PS can reduce the dielectric constant of glass-ceramic substrate materials effectively, but reduce the flexural strength at the same time.
在玻璃陶瓷基板材料中加入PS有机球能有效地降低基板的介电常数，但同时影响基板的抗折强度。
The effect of dielectric constant, dielectric loss factor, coefficient of thermal expansion (CTE)and characteristic impedance of substrate materials on properties of MMB are mainly discussed.
介绍了微波多层板所用基材的性能参数，重点阐述了材料的介电常数、介质损耗、热胀系数、特性阻抗对多层板性能的影响。
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