爱词霸英语   汉语   手机版   软件版下载 | English
每日一句:正在加载...
1.Eight equations computed isotopic abundance and two equations computed isotopic abundance ratio have been given.
给出八个计算丰度公式和两个计算同位素比公式。收藏指正
2.The isotopic abundance ratio and content are determined with isotopic mass-spectrometry.
文章用同位素质谱法测定了辐照堆元件铀的同位素丰度比和含量。收藏指正
3.The abundance ratio of D/H reaches 30% from 0.1%, and more than 90% from 10%.
D浓度为0.1%的样品经装置浓缩后得到D浓度为30%的产品,贫化部分D浓度小于10?5;收藏指正
4.Therefore, even the ratio of the abundance ratio of the two essential standards reaches 5,the relative derivation of results determined by the two methods as mentioned above is much less than 0.01 %.
这样，即使在2个基本标准的丰度比的比值达到5的条件下，2种方法的标定结果的相对偏差远小于0．01％。收藏指正
5.By this method the magnitude of isotope shift, isotope abundance ratio, Lorentz width and Doppler width of the spectral profile can be deduced.
由此可获得同位素效应的光谱线位移量、同位素的丰度比及其光谱线的洛仑兹宽度与多普勒宽度。收藏指正
6.The determination and confirmation were made by means of selected monitoring ions(SM) mode,SIM(m/z) were 231,233,288 amu( abundance ratio was 100:14:11),using external standard method.
特丁磷选择监测离子为(m/z231、233、288),其丰度比约为100:14:11。收藏指正
7.The 48 h air mass back trajectory map provided plenty of detailed meteorological information and ,combined with ?ρ?(TSP),?ρ?(Pb) and ?w?(Pb) as well as lead isotopic abundance ratio,can be used to characterize lead pollution in air. ?
48h反向风迹图提供了大量详实的气象信息,结合ρ(TSP),ρ(Pb),w(Pb)和同位素丰度比的数据,可用于综合表征铅污染的状况。收藏指正
8.After leaching with diluted nitric acid,21 aerosol samples collected on glassfiber filter in Tianjin from November 1998 to February 1999 were analyzed for ?ρ?(Pb),?w?(Pb) and isotopic abundance ratio of ????206?Pb/????207?Pb.
对天津市1998年11月—1999年2月期间21个玻璃纤维滤膜大气颗粒物样品,采用稀酸浸出法溶解后,测量了ρ(Pb),w(Pb)和同位素丰度比206Pb 207Pb。收藏指正
9.The natural fractional isotope abundance ratio of boron was determined according to the intensity of v_3 bond of ~(11)BCl_3 and ~(10)BCl_3 by infrared spectroscopy in the fluorocarbon oil system with self-made BCl_3.The results(4.01 and 4.00±0.05)obtained by two methods, rectifying the disturbance of impurities and overlapping bands or selecting an improved base line under the controlled impurity quantity,lie close to the data by mass spectrometry.
配合激光分离硼同位素,用自制的BCl3,在氟油脂玻璃系统中,依据~(11)BCl_3和~(10)BCl_3的ν_3谱带强度用红外光谱法测定了硼同位素的天然丰度比. 在控制已知杂质量的情况下,对杂质和谱带重叠的干扰采用一般基线加校正或选取改良基线这样两种方法,获得的结果(4.01和4.00±0.05)接近于质谱法测定值。收藏指正
10.To the great scale of the universe age, 187 Re- 187 Os isotopic pair, which have very long half life, was used as a cosmic nuclear clock of cosmochronometr. It is a typical relationship between modern astronomy and nuclear physics. The neutral isotope abundance ratio of 187 Re over daughter nucleus 187 Os in common growth mineral can be used as the clock to measure the time.
以很长半衰期 ( 4 2× 1 0 9a)的 β-衰变的 187Re- 187Os核对作为大尺度的宇宙核钟来量度宇宙的年纪 ,是近代天文学与核物理学相结合的又一典范 .收藏指正
尝试查询
汉英释义