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Study Group members, Australia, New South Wales University astronomer Chris - Tingni that,"61 Vir b" of the minimum mass is about 5.1 times Earth's mass,"61 Vir c" The quality is about 18 times the Earth, and " 61 Vir d "is about the quality of the Earth 23 times.
研究小组成员、澳大利亚新南威尔士大学天文学家克里斯-汀尼认为,"61 Vir b"的最小质量大约为地球质量的5.1倍,"61 Vir c"的质量大约为地球的18倍,而"61 Vir d"的质量大约为地球的23倍。
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Mass volleyball also had certain of advance, but we also see the universal depth that mass volleyball exercise withy wide and degree is not enough.
随着人们生活水提高及全民健身运动的开展,群众性排球运动有了一定的进步,但我们也看到群众性排球运动的普及深度与广度不够。
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Shijiazhuang 050018, ChinaOxidation desulfurization via photocatalysis was investigated by using thiophene in xylol as the model compound, and hydrogen peroxide is used as the oxidant. The effects of hydrogen peroxide mass fraction, high shear agitation time, titanium dioxide mass on the desulfurization efficiency of FCC gasoline were also investigated.
以噻吩的二甲苯溶液作为FCC汽油的模型化合物,双氧水为氧化剂,研究了在光催化作用下,双氧水体积分数、高速均质时间和二氧化钛的加入量等工艺条件对脱硫率的影响,在适宜条件下,模型化合物的脱硫率可达到80%以上。
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The results showed that the TiN andN films are polycrystalline phase. The properties and structure of TiN films are mainly determined by the N2 mass flow rate, and as the N2 mass flow rate increases, the structure of the TiN films transforms to f.c.c. type leading to better the properties of films. The presence of negative bias voltage can optimize the grain of TiN films, lower the defect proportion and denser the films, which improves the hardness of films. The TiN films conform to the free carrier absorption mechanism and there are many of free electrons with lower N content in TiN films. With the increase of N content, the quantity of free electrons and reflectivity of films decrease, and the plasma frequence shifts to the lower energy, which leads to the regular change of colors of films from silver, yellowy, golden to yellow-red, meanwhile the lightness of films decreases. The goldenN film consists of TiN and ZrN phase, but belongs to a sigle f.c.c. structure with (111) preferred orientation. The Zr-doping dosen't change the position of the valance band, conduction band and forbidden band ofN film, but leads to the presence of new energy levels, which is the reason thatN film remains golden. The transparent hard films with good corrosion resistance and high hardness have been prepared and the further reseachs showed that the grain size of those films is by far smaller than the wave length and the width of forbidden band of those films is very broad, is the reasons that those films are transparent.
研究表明:氮化钛和N 薄膜为多晶态,氮流量决定了氮化钛薄膜的结构和性能,增加氮流量能使氮化钛薄膜的结构向面心立方结构转变,从而得到性能良好的氮化钛薄膜;施加负偏压能优化氮化钛晶粒和减少薄膜中的缺陷,使膜层变得更致密,从而提高薄膜硬度;氮化钛主要遵循自由载流子光吸收,氮含量较少时薄膜中的自由电子数目较多,随着氮含量的增加,薄膜中的自由电子数目不断减少,反射率逐渐降低,等离子体频率向低能端移动,从而使薄膜颜色出现规律变化,由金属色银白色到淡黄、金黄再到红黄,并且薄膜亮度呈下降趋势;金黄色的N 薄膜中存在TiN 和ZrN 的分离相,但其为单一的面心立方结构并具有(111)面择优取向;相对于TiN 薄膜,Zr 掺杂后,并没有使薄膜的导带、价带和禁带发生变化,只是在TiN 禁带内增加了新能级,这也正是掺杂Zr 后,薄膜仍
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Mulching can apparently enhance availability ofsoil water,lengthen the duration of available water,enhance redistribution of soil water from covered soil massto adjacent bare soil mass,increase soil moisture in the adjacent bare soil mass,which can lighten threat ofcontinuous drought to survival and growth of youngling.
覆盖能显著提高土壤水分对植物的有效性、延长有效水的持续期、增强覆盖区与相邻非覆盖区下层土壤液态水的运移与再分布,提高相邻非覆盖区下层土壤的水分状况,减轻了持续干旱对造林成活和幼树生长的威胁。
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The aseismic control for pile-foundation bridges considering soil-structure-interaction was studied. There are two problems were solved:(1) The coefficient matrix is singularity because the elements of rotational degree in mass matrix equal to zero due to the flexiblity of the pier.(2) The iteration of control gain was not convergent because the dumped mass of the beam is very large comparing with that of the pier.
为将Smith[162]方法用于桥梁结构,本文解决了如下两个问题:(1)以弯曲变形为主的桥梁结构,其质量矩阵中相应于转动自由度的元素数值为零,由此导致等效固基模型中的系数矩阵奇异;(2)桥梁结构堆聚到顶部节点的梁体质量很大,由于质量分布不均匀导致控制增益的迭代计算不收敛。
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The optimum reaction conditions were as follows: rosin 5 g, m: in: m 1:2:2, palladium chloride 0.090 %, n: n1:10, hydrogen pressure 5 MPa, reaction temperature 160℃ reaction time 3 h, mass fraction of abietic acid could be under 1%, mass fraction of dehydroabietic acid was 5.6%, which conforms to the national standards. The regeneration of catalyst was investigated. After cycling five times, the product of hydrogenated rosin still conforms to the national standards without any treatment of catalyst.
在松香5g、m:m:m1:2:2、氯化钯0.090%、n:nl:10、氢气压力5MPa,反应温度160℃,反应时间3h的较佳工艺条件下,产物氢化松香中极酸的质量分数小于1%,去氢枞酸的质量分数5.6%,符合GB/T 14020-2006国家标准;并对催化剂的重复使用性能进行了考察,催化剂相不经过处理直接重复使用5次后,产品氢化松香仍然符合国家标准中关于枞酸和去氢枞酸的指标要求。
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C. It is reasonable to pursue a period of observation in a premenopausal woman with an adnexal mass if the mass is not clinically suspicious on ultrasonography.
如果在超声检查下没有临床怀疑的附件包块绝经前妇女,追踪观察一个阶段是有理由的。
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C. It is reasonable to pursue a period of observation in apremenopausal woman with an adnexal mass if the mass is notclinically suspicious on ultrasonography.
C。对于绝经期前妇女的附件肿块,若未被临床超声检查所怀疑,可以随访观察一段时间。
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The alkaloids were studied by gas chromatography coupled to mass spectrometry. Six major venom alkaloids were detected in worker venom which are all trans 2-methyl-6-alkyl or alkenyl pepdine according to mass spectral data and relative report on S.invicta.
通过保留时间和质谱离子碎片数据,并与国外相关报道比较分析得出:入红火蚁毒液中主要成分为2-甲基-6-烷基或烯基哌啶生物碱,仅有6位取代烃基碳链长短和烯键有无及顺反异构的差异。
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- 推荐网络例句
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In other research, chondroitin is being investigated for use in several other conditions.
在其它研究,软骨素被调查用於几个其它情况。
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They would make fun of him for having to work.
他们拿他的工作来开玩笑。
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It is concluded that the higher of leaf base may be the main caus...
p值较高是白天叶片伸长速度较高的重要原因。