spectrum n. (pl. -tra ) 1.【物理學】譜,光譜;波譜;能譜,質譜。 2.【無線電】射頻頻譜;無線電(信號)頻譜。 3.【心理學】(眼睛的)余像;殘像。 4.〔轉義〕范圍,幅度;(連續的)系列。 an absorption spectrum 吸收(光)譜。 a bright line spectrum 線狀光譜。 an optical spectrum 光譜。 a solar spectrum 太陽光譜。 a wide spectrum of opinion 意見的不同幅度甚大。
Methods for physical performance determination of sandy alumina . determination of - alumina content . x - ray diffraction spectrum method 砂狀氧化鋁物理性能測定方法. x衍射法測定-氧化鋁含量
The nucleating effects of and nucleating agent on the crystallization behavior of polypropylene ( pp ) were studied by differential scanning calorimetry ( dsc ) and x - ray diffraction spectrum ( xrd ) 摘要用差示掃描量熱儀和x射線衍射儀對兩種類型成核劑改性的聚丙烯的結晶行為進行了表征。
X - ray diffraction spectrum , empa methods and several tests including mechanical properties , electrochemistry , corrosion wear , on - site plate hanging , the microstructure of steel has been observed and analyzed , performance has been studied , and corrosion - abrasion , fragility mechanism , and microalloy application in ferritic stainless steel have been explored comprehensively . the test results of electrochemistry , corrosion wear and on - site plate hanging have been analyzed . the analytical result shows that crsomo has enough corrosion resistance in phosphoric acid slurry because it has high chromium and low carbon 通過實驗室的電化學試驗、腐蝕磨損試驗和磷肥廠的現場掛片試驗結果分析,表明: cr30mo鐵素體不銹鋼高鉻低碳的配合,保證其在磷酸料漿中具有足夠的耐蝕性: cr30mo中( fe , cr ) _ 23c _ 6 、 ( fe , cr ) _ 7c _ 3 、 mo _ 2c 、等碳化物硬質點從基體的彌散沉淀析出可提高鋼的硬度和耐磨性,使得鋼在磷酸料漿中具有良好的耐磨蝕效果。