Much of the progress has come through studies of the afterglow of the big bang, radiation known as the cosmic microwave background (CMB).
这一进展多半来自对大爆炸“余辉”——也就是为人所熟知的，名为“宇宙微波背景辐射”(CMB)的辐射能——的研究。
This paper mainly studies the microwave permittivity measurement techniques of dielectric materials.
本文主要研究了微波介质材料介电常数的测试方法。
Detailed studies are made on the effect of the microwave power, time of microwave radiation, the amount and varieties of catalysts, and the matching of reactant on the yield ratio of reaction product.
研究了微波功率、辐射时间、催化剂种类和用量、反应物配比对反应产物收率的影响。
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