asymmetric(al)雙語例句

1. In particular, the Fano factor for the asymmetric contact structures is more than double that of symmetric ones due to increased backscattering, and is within the experimental range.
特別的，Al(001)面的非對(duì)稱結(jié)構(gòu)的單原子接觸的Fano Factor是對(duì)稱結(jié)構(gòu)的兩倍多，并且其計(jì)算數(shù)值在實(shí)驗(yàn)范圍之內(nèi)。

2. A series homopolyme of ethylene synthesised by metallocene catalyst was analyzed by the high temperature gelatin permeation chromatography. The results showed that the molecular weight distribution changed not too much when the ratio of Al/Ti ranging between 1000 and 4000, while the molecular weight distributed increased from 2.48 to 2.81 when the ratio ranging between 4000 and 7000; catalyst D had the lowest activity to be used as asymmetric metallocene catalyst; the curve of molecular weight moved much to the left with the increases of temperature and two active centres appeared when the temperature is 70℃.
通過高溫凝膠滲透色譜對(duì)茂金屬催化合成的一系列乙烯均聚物進(jìn)行了分析，可以看出Al/Ti比從1000變到4000時(shí)，分子量分布曲線圖變化不大，而從4000變到7000時(shí)，變化相當(dāng)大，分布寬度從2.48增至2.81；催化劑D的活性最小，可作為非對(duì)稱性茂系金屬催化劑；該聚合體系分子量的大小受聚合溫度的影響很明顯，隨溫度的升高，分子量分布曲線圖向左發(fā)生很大位移，在聚合溫度為70℃時(shí)存在兩個(gè)活性相當(dāng)?shù)幕钚灾行摹?/p>

3. A new pulse sealing treatment, involving the use of an asymmetric pulse power supply to seal the anodic film on an Al substrate immersed in a solution of aluminum sulfate, has been developed.
研究了一種采用雙向脈沖電源將鋁合金陽極氧化膜在硫酸鋁溶液中進(jìn)行封閉的綠色工藝。

4. In the study of gelation kinetics of asymmetric membrane formation via phase inversion, Strathmann et al.
本文采用了一套先進(jìn)的實(shí)驗(yàn)裝置來測(cè)定用相轉(zhuǎn)換法制備非對(duì)稱膜的凝膠速度，得到了和Strathmann等人不同的結(jié)果。

5.

5. Summary of the Ph. D. Dissertation In this dissertation, we thoroughly investigated theory and experiments on the Second Harmonic Generation of the compositional asymmetric GaAs/Al〓Ga〓As Step Multiple Quantum Wells by intersubband transitions.
本文對(duì)GaAs/Al〓Ga〓As階梯型多量子阱的二次諧波產(chǎn)生進(jìn)行了系統(tǒng)的理論和實(shí)驗(yàn)研究。

6. We have designed and prepared a new family of chiral imidazolium based ionic liquids(identified by NMR and IR et al.) based on amino acids derived from the chiral pool by a simple and straightforward procedure, and the induction ability of chiral imidazolium salt for asymmetric catalytic benzoin condensation reaction has been probed. Nevertheless, low enantioselectivity has been detected, and more work would be performed for enantioselective processes in the future.
以天然光學(xué)純氨基酸為手性源簡便合成出了幾種手性咪鎓鹽鹽離子液體，并考察了其催化苯甲醛的安息香縮合反應(yīng)的手性誘導(dǎo)性能，初步研究結(jié)果表明其手性誘導(dǎo)能力較差，有待于進(jìn)一步優(yōu)化手性咪唑鎓鹽離子液體催化劑的改進(jìn)。

7. Asymmetric Hydrogenation of Methyl Pyruvate and Acetophenone Catalyzed by Al_2O_3 Supported Pt Nanoclusters or Ru Catalyst; Research on the Catalytic Process of Hydrogen Production from Dimethyl Ether Reforming
負(fù)載型金屬催化劑催化丙酮酸甲酯和苯乙酮不對(duì)稱加氫反應(yīng)的研究二甲醚重整制氫催化反應(yīng)過程的研究

8. Brownian motor is a nanometer scale machine and an asymmetric structure in space. The transport of Brownian particles is driven by some non-equilibrium processes, such as external load force, chemical potential difference, temperature difference, et al.
布朗馬達(dá)作為一種納米級(jí)的微小機(jī)器，具有空間不對(duì)稱結(jié)構(gòu)，布朗粒子的傳輸受到外力、化學(xué)勢(shì)差或溫差等非平衡過程驅(qū)動(dòng)。

9.

9. The progress in the PMO theory made by Dewar, Hoffmann, Epiotis, Houk, Wolfe and Kost et al, is reviewed. The various PMO methods have been used as the useful instrument for analyzing the effects of the orbital interactions on the molecular geometry and on the sterospecific and regiospecific reactions, such as 1, 2-asymmetric addition to carbon-oxygen double bond of ketone and various cycloaddition reactions.
經(jīng)Dewar，Hoffmann，Epiotis，Houk，Wolfe和Kost等理論化學(xué)家的努力，PMO理論已經(jīng)成為研究影響分子構(gòu)型、構(gòu)象和(立體專一性和區(qū)域?qū)Ｒ恍?反應(yīng)產(chǎn)物的結(jié)構(gòu)因素的一個(gè)有效的手段。

10. Heterogeneous Asymmetric Hydrogenation of Acetophenone and Its Derivatives over Ru - (S) - BINAP/γ - Al_2O_3
Ru-（S）-BINAP/γ-Al2O3催化劑上苯乙酮及其衍生物的多相不對(duì)稱加氫反應(yīng)

11. Preliminary trials of the asymmetric reaction showed that-Br-BINOL-Al was a promising system with moderate enantioselectivity and good reactivity.
初步的實(shí)驗(yàn)表明-Br-BINOL-Al是一個(gè)比較有前途的反應(yīng)體系，獲得中等的對(duì)映選擇性和較高的反應(yīng)活性。

12. Generally, both methods reporduce faithful results as those of Huang et al. For mirror periodic method, the data are extended once forever. Ideally, it is a way for handling the end effects of the HHT, especially for the signal that has symmetric waveform. The extrema extending method behaves as good as MPM, and it is better than MPM for the signal that has strong asymmetric wave form.
結(jié)果 首先對(duì)系列由標(biāo)準(zhǔn)的周期函數(shù)構(gòu)造而成的時(shí)間序列信號(hào)進(jìn)行了EMD處理，驗(yàn)證HHT方法分解的可行性、有效性；然后分別對(duì)例正常人脈搏波信號(hào)和一例典型的冠心病人脈搏波信號(hào)進(jìn)行分解處理，對(duì)得到結(jié)果進(jìn)行了比較。