class of emission 中文意思是什麼
class of emission
解釋
發射等級-
It is found that, the modes of coaxial optical emission of dissimilar gaps, clustering at distinct numerical range, can distinguish 1st, 2nd and 3rd class welds of different welding quality effectively
結果表明,同軸光信號幅值的眾數在不同間隙的焊縫段,聚集在線性可分的不同的區間,可以有效分開焊接質量不同的類、類、類焊縫;信號的分段功率譜分析能夠較為直觀地反映焊接狀態的變化。 -
Nanoparticles and nanocluster materials are a new class of advanced materials exhibiting unique chemical and physical properties compared to those of their bulk materials. y2o3 : eu and gd2o3 : eu are efficient red - emission phosphor. recent studies show that they have significant promise in the field of luminescent materials
納米材料由於其介觀效應而表現出不同於常規體材料的獨特物理化學性質,因而對納米材料的合成和性質研究已經成為材料科學、物理學以及化學學科的前沿。
分享友人