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(xù)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。
Mutation spectrum analysis oftransglutaminase gene in streptomyces fradiae after irradiation by n ion 氟氏鏈霉菌離子束注入突變譜的分析
The specific nontargeted mutation spectrum is different from that of targeted mutation , whereas the mutation occurs at damaged dna site . furthermore , we have demonstrated that low concentration mnng exposure induced comprehensive cellular responses 進一步地,我們還證明了低濃度mnng的作用下有廣泛的細胞反應,尤其是在信號轉導通路的激活和基因表達的改變的研究中取得了一些突破性的進展。