查询词典 reversion

The bottom line: Those hundred-year floods that give mean-reversion traders solace really occur every two or three years - and they can and do wipe out fortunes.

简单说：百年一遇的洪水只是给均值回归交易者的安慰而已，实际上洪水每2，3年就会发生一次--一旦洪水来了，你的财富就没了。

As a new and advanced technology in the world to gain spectrum,interference imaging spectrometer is superior in high throghout and multichannel. But a series of digitial processing must be executed to get spectrum because the raw datais interference figure of targets. In thesis, taking ChangE-1ⅡS as an example, thetechnology about calibration, spectral reversion, performance evaluation ofcongeneric instrument are studied.

干涉型成像光谱仪具有高通量、多通道等优势，是一种世界上先进的间接获取光谱信息的新技术，它获得的直接信息是干涉图，需要经过一系列处理才能得到光谱维信息，论文以CE-1干涉成像光谱仪为分析对象，研究了适用于同类成像光谱仪器的信息反演、定标及评价技术。

The reversion frequency is increased by the addition of mutagens.

逆转的频率靠加入诱发变因素而增加。

Tumour Biol, 1998,19:244-252.［3］ Olson DJ, Gibo DM, Saggers G, et al. Reversion of uroepithelial cell tumorigenesis by the ectopic expression of human wnt5a ［J］.

Bachmann等［12］发现细胞核内Wnt5A基因表达越高，黑素瘤进展越慢，对瘤组织周围的侵袭能力也越弱。

First, based on the measurements of absorption cross-section, the absorption characters of the main polluted gases in flue gas were deeply studied, and found that SO_2、 NO、 NO_2、 NH_3 had a character of approximate periods absorption at some wave band, which is a good chance of a new measurement introduced. Secondly, the factors about absorption cross-section of the gases measured, which affect on the measurement precision of DOAS, is studied deeply. The influence of pressure and temperature on absorption cross-section was given special research, and the compensated measures were given to the gases based on the character of the gases. Thirdly, in practical measurement, it must have been satisfied that the monochromator was consisted with the reference spectrum, which was based on absorption cross-section. In order to satisfy the consistency, the technique of reversion in the image was introduced, the reversions of spectrums were realized with wiener filter and noise elimination based on wavelet transform.

首先从吸收截面的测量入手，对烟气中主要的污染气体SO_2、NO、NO_2、NH_3的吸收特性进行详细研究，发现这些气体在局部区域具有准周期吸收特征，这为引入新的测量方法提供了契机；其次，对决定DOAS测量精度的被测气体吸收截面的诸多问题进行了深入研究，重点研究了压力、温度对被测气体吸收截面的影响，并针对被测气体的特征提出了相应的修正措施；再次，在实际测量中，要求所使用的光谱仪必须与以吸收截面为基础的参考光谱相匹配，为了满足匹配这一条件，文中将图像复原技术引入到光谱复原，使用维纳滤波和小波消噪实现了光谱的复原，将复原后的光谱与所使用光谱仪的仪器函数卷积，即可实现；最后，在对DOAS测量原理详细分析的基础上，对传统的最小二乘—差分吸收光谱法进行了详细的阐述，通过实验证实两点：1。

The results reveal that under violet ray radiation, the gas sensitivity properties of CeO2 doped ZnO nanowires gas sensor have been increased 300% and 305% for 100 ppm density with CH4 and CO, the response time of CeO2 doped ZnO nanowires sensor have been cut down 3 s and 4 s respectively; the reversion time of CeO2 doped ZnO nanowires sensor have been cut down 2s and 4s respectively.

结果表明，在紫光激发下，CeO2掺杂ZnO纳米线气敏元件对甲烷和一氧化碳的灵敏度分别提高了300%和305%，对甲烷和一氧化碳的响应时间分别缩短了3s和4s；恢复时间分别缩短了2s和4s。

Based on the study of 1420 Al-Li alloy strengthened by a single precipitate, the author study strengthening contributions and their anisotropies of each phase and that of deformed textures to anisotropy in 2090 and 2090+Ce alloys strengthened by two precipitates, by reversion treatment and the exponential additional rule.

在研究单相强化的1420合金的基础上，通过回溶处理和指数叠加法研究了两相强化的2090及2090+Ce合金中各析出相对合金的强化贡献及其各向异性、形变织构对合金各向异性的贡献。

The results showed that the dynamic properties,especially the anti-reversion of vulcanizate improved by adding anti-recovery agent PK900 in shoulder pad without any adverse effect on curing behaviour of rubber compound and physical properties of vulcanizate.

结果表明，在胎肩垫胶中加入抗硫化返原剂PK900，可以明显提高胶料的抗硫化返原性能，改善硫化胶的动态性能，对胶料的硫化特性和硫化胶的物理性能无明显影响。

Gary Burtless of the Brookings Institution, a think-tank, thinks some of the downward mobility unearthed by the Pew study will turn out to be nothing more sinister than a reversion to the mean.

布鲁金斯学会智囊团Gary Burtless表示，皮尤信托发现的这一向下发展的趋势并不如人们想象中的那么恐怖，而只是一种正常的回归现象。

This article has researched the reversion physical distribution network design from the closed loop supply chain angle.

本文从闭环供应链角度研究逆向物流网络设计问题。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。