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shift for
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     A five-parameter model with linear relationship of chemical shift for 171 equivalent carbon atoms of 9 androsterones is created using multiple linear regression.
     对9个雄甾酮分子171个等价碳原子的13CNMR化学位移建立了多元线性回归模型。
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     A six-parameter model with linear relationship of chemical shift for 292 equivalent carbon atoms of 20 flavones has been created by using multiple linear regression.
     对20个黄酮类化合物分子292个等价碳原子的13C-NMR化学位移建立了多元线性回归模型.
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  “shift for”译为未确定词的双语例句
     Based on Koopmans theory, the binding energy of 4f 5/2 and 4f 7/2 for Pu and Au atom and chemical shift for PuO 2 have been calculated using MCDF method.
     基于Koopmans定理 ,应用MCDF方法计算了Pu和Au原子 4 f5/ 2 和 4f7/ 2 的结合能以及PuO2 所引起的化学位移 ,一般大于固体的相应值
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     The main emission peak in cubic Gd2O3∶Eu3+ nanocrystal was at 612 nm(the 5D0→7F2 transition). In addition,a red shift for charge transfer state occurred in the excitation spectrum.
     立方相的Gd2O3∶Eu3+纳米晶主发射峰位置在612 nm(5D0→7F2跃迁),激发光谱中电荷迁移态发生了红移。
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     SOME REGULARITIES IN  ̄(19)F-NMR CHEMICAL SHIFT FOR COORDINATION COMPOUNDS OF PHOSPHINE DIFLUORIDE
     二氟化膦配位化合物的~(19)F-NMR光谱化学位移规律
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     Study of Coupling Reaction of Dehydrogenation of Ethane with Reverse Water-Gas Shift for Ethylene ——Effect of Promoter on Fe/SiO 2 Catalyst
     乙烷脱氢与逆水煤气变换耦合制乙烯反应——助剂对Fe/SiO_2催化剂活性的影响
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     Correlation of ~1H NMR Chemical Shift for Alcohol+Inert Solvent Mixtures by LFHB Model
     基于LFHB理论模型关联和预测醇+惰性溶剂的~1HNMR化学位移(英文)
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  相似匹配句对
     Magnetic Shift
     磁移位
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     Design Shift
     设计移位
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     Fuzzy Shift System for Bulldozer
     推土机的模糊换档系统
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     The Phase Shift Cosine Transform
     相移Cosine变换
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  shift for
The basis property of the system of eigen- and associated functions of a boundary value problem with shift for the wave equation
      
The isomeric shift for complex I δ=0.168(1) mm/s and quadrupole splitting ΔEQ=1.288 mm/s at T=80 K.
      
Nature of the Darwin term and (Zα)4m3/M2 contribution to the Lamb shift for an arbitrary spin of the nucleus
      
The estimated shift for a hydrated electron agrees with the experimental data.
      
The μd-μp isotope shift for the 1S-2S splitting is found to be equal to 101003.3495 meV, which can be treated as a reliable estimate when conducting the corresponding experiment with an accuracy of 10-6.
      
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Stark frequenoy shift for the CH_3F optically pumped far infrared laser light has been theoertically calculated.It is pointed out that there is the possibility of resonance between the methylfluoride emmited far infrared laser line (496 μm) and ~3P_0→~3P_1 transition in Mg atomio beam at the electric field intensitry of 2.9×10~4~4.4×10~4 v/cm,meanwhile maintaining resonance between the laser levels of methylfluoride and the CO_2 pumped line 9p(20).It has been predicted that there are four sets of possible...

Stark frequenoy shift for the CH_3F optically pumped far infrared laser light has been theoertically calculated.It is pointed out that there is the possibility of resonance between the methylfluoride emmited far infrared laser line (496 μm) and ~3P_0→~3P_1 transition in Mg atomio beam at the electric field intensitry of 2.9×10~4~4.4×10~4 v/cm,meanwhile maintaining resonance between the laser levels of methylfluoride and the CO_2 pumped line 9p(20).It has been predicted that there are four sets of possible operating transitions:~QR(11,5,-11),~QQ(12, 5,-11);~QR(11,6,-6),~QQ(12,6,-6);~QR (11,7,-3),~QQ (12,7,-3) and ~QR(11,8,0),~QQ(12,8,0).

本文对甲基氟(CH_3F)光泵远红外激光的斯塔克频移做了理论计算。指出用2.9×10~4~4.4×10~4伏/厘米的电场强度,有可能使甲基氟发射的远红外激光(496微米)与镁原子束的~3P_0→~3P_1跃迁共振,同时保证甲基氟的泵浦跃迁与 CO_2激光9P(20)线共振。预期可能的工作跃迁有四组:~QR(11,5,-11),~QQ(12,5,-11);~QR(11,6,-6),~QQ(12,6,-6);~QR(11,7,-3),~QQ(12,7,-3);~QR(11,8,0),~QQ(12,8,0)。

Research in fluvial geomorphology in China during the past 30 years was mainly along the lines of valley geomorphology, channel geomorphology, estuaries and deltas. A great amount of systematic investigations has been carried out in the fields such as valley evolution history and features of Changjiang River(Yangtze River) and Huanghe River(Yellow River) and their relations with geology, climate, neotectonic movement, etc. Field evidence suggests that the course of Sanxia(the Three Gorges) of Changjiang were...

Research in fluvial geomorphology in China during the past 30 years was mainly along the lines of valley geomorphology, channel geomorphology, estuaries and deltas. A great amount of systematic investigations has been carried out in the fields such as valley evolution history and features of Changjiang River(Yangtze River) and Huanghe River(Yellow River) and their relations with geology, climate, neotectonic movement, etc. Field evidence suggests that the course of Sanxia(the Three Gorges) of Changjiang were formed as early as at the end of the Cretaceous, and then the Yangtze valley was sharply cut down from the uplifting Exi planation surface, and took shape of a series of deep gorges into limestone strata. Investigations have also found that the upper reach of Jinsha River near Dengke once flowed southeastward into Yalong River. Recently the study of river valley geomorphology of the Xizang Plateau reveals that Yaluzangbu River is an antecedent river and that the Daguaiwan gorge in the east of it is neither an elbow ot capture nor a tributary flowing westward to join the Indus as were formerly taken to be. Research into channel geomorphology developed somewhat later, but has made rapid progress. A grade separation system has been put forward for the classification of channel patterns, and attentions given to the dynamic characteristics of the formation and evolution of channel patterns by using C_v(variation factor of the peak discharge) and ρo/ρp(the ratio of incoming sediment concentration to the sediment carrying capacity in a channel) as indexes to indicate the stabilities of different channel patterns and the mutual transformations among them. By analyzing many rivers with heavy sediment concentration, a wandering index has been derived. Rivers having the value of greater than 5 are called shifting and less than 2 unshifting. In the middle and lower Changjiang, the latest research of meanders and relatively stable channel patterns has had some results. Observations and simulation experiments con the fluvial processes of the channels above and below reservoirs reveal that the channel of Huanghe below Sanmenxia Reservoir, after baving been washed by clear water, still remains shifting for a long time, and the headward silting end of Weihe channel above the reservoir stretches out or draws back within a certain limit. The investigations of deltas point out that since the Quaternary the mouth of Changjiang has been extending southeastward and that there exist imbricate fossil deltas under the water. As for the Huanghe delta, it is evident that since the diversion of the river course in 1855, a new delta with an area of 5,450 km~2 has been built up. Penetrating research has also been made on the geomorphological features and processes of the evolution of Qiantang River. Field survey discovers that the main source of Changjiang is Tuotuo River rising in Geladandong snowberg, and that of Huanghe is Kariqiu River originating in Geshigeya Mountain of the Bayankala Mountains.

三十年来我国河流地貌的研究主要为河谷地貌、河床演变和河口三角洲。其中,河谷地貌研究提出了长江三峡在白垩纪末已经形成,其后从鄂西期夷平面下切于石灰岩层内而形成一系列峡谷。发现金沙江上游在邓柯附近曾向东南流入雅砻江。论证了雅鲁藏布江横贯喜马拉雅山脉的为先成河,并非由于河流袭夺的结果。河床演变的研究提出了游荡指标>5为游荡,<2为非游荡。以C_v和ρ_o/ρ_p两值作为河型稳定和转化的指标。对三门峡、丹江口等水库上下游的河床演变进行了观测和模拟试验。研究了长江、黄河和珠江等三角洲的形成演变,提出了新的见解。经过实地考察发现长江的正源为沱沱河,发源于各拉丹冬雪山;黄河的正源为卡日曲,发源于巴颜喀拉山脉的各式各雅山。

Two hydrogen masers were fixed in Shaanxi Astronomical Observatory in May 1978. Since then, they have been operating. For recent years we have made some improvements such as using the storage bulb with short neck and discharge bulb with large discharge cell, utilizing the La-Ni Hydrogen Storage instead of the high pressure gas bottle, improving the operating condition of Ti pump, raising the reliability of electronic circuite and so on. In April 1979 we completed the experiments of the hydrogen maser wall shift...

Two hydrogen masers were fixed in Shaanxi Astronomical Observatory in May 1978. Since then, they have been operating. For recent years we have made some improvements such as using the storage bulb with short neck and discharge bulb with large discharge cell, utilizing the La-Ni Hydrogen Storage instead of the high pressure gas bottle, improving the operating condition of Ti pump, raising the reliability of electronic circuite and so on. In April 1979 we completed the experiments of the hydrogen maser wall shift with Shanghai Bureau of Metrology and obtained the constants of the wall shift for the homemad teflon F4 coating. The above works make the hydrogen masers operate well. The specifications of hydrogen masers are as follows: short-term stability ±1×10~(-12)/s Long-term stability ±(1~3)×10~(-13)/day accuracy ±2×10~(-12) The constants of wall shift are K(40℃)=(-293±17) mHz.cm, α(40℃)=(-17±2)×10~(-3)/℃ The operating harameters of the maser are rather better, for example, c field is less 1 mOe; the hydrogen flow is very small; the range of the control of the temperature of the cavity is±0.01℃.

本文叙述了作为中国科学院陕西天文台原子时TA(CSAO)基准的两台氢原子频率标准的工作情况,短稳、长稳、准确度等技术指标的测试结果。

 
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