focused ray 中文意思是什麼
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This study was focused on the occurrence characteristics of the cryptomelane - bearing ores and the mineralogical characteristics of natural cryptomelane. the morphology, chemical and structure features of natural cryptomelane were characterized by means of powder x - ray diffraction, scanning electron microscopy, electron probe microanalyzer, energy dispersive spectrometer and x - ray fluorescence
利用x -射線粉晶衍射掃描電鏡電子探針電子能譜和x熒光光譜對天然錳鉀礦的形貌特徵化學成分結構特徵進行研究，結果表明天然錳鉀礦晶體形態主要為針狀纖維狀，沿 -
When chandra, with its sensitive x - ray detectors, focused on the nuclei, astronomers hoped it would tell them whether either of the two points of activity were black holes
錢德拉裝有敏感的x線檢測器，天文學家用它對準這星系的核心，希望確定兩個活躍點中是否有一個為黑洞。
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