After the working frequency is selected, the meta-material cover increases the patch antenna’s directivity by 9.14dB.
在选定的工作频率，异向介质覆层将贴片天线的方向性系数提高了9.14dB。
参考来源 - 基于光子晶体与异向介质的新型天线的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Concerning his own meta-philosophy, John Dewey presents a new attitude to traditional philosophy: philosophy is derived not from cognitive material but from social emotion material.
关于自己的元哲学理论，杜威交代了一个对于传统哲学的新态度：哲学发源于社会的情绪的材料、而非认知的材料。
Supported molten salt membrane is made from a new kind of ceramic material (lithium meta-aluminate) and ternary eutectic mixture of lithium, sodium and potassium carbonates.
支撑熔盐膜由一种新型陶瓷材料(偏铝酸锂)和锂、钠、钾的三元最低共熔点混合物制成。
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