饱和

The numerical results show that lossy dielectric-load can heighten the start oscillation current of absolute instability, and increase depends on the magnetic field strength and the perpendicular-to-parallel velocity ratio of the electrons; The thickness of the lossy waveguide increases the start oscillation length of backward wave oscillation.

结果表明：损耗介质的加载，可以提高绝对不稳定性起振电流，提高的幅度依赖于工作磁场偏离饱和磁场的程度、电子束横纵速度比等；增加波导损耗介质加载的厚度，可以提高竞争模式的回旋返波起振长度。

In addition,Various methods of stability analysis of wakes behind bluff bodies arediscussed,among which the general theory of absolute/convective instability is strictlyformulized from stability equations of viscous flow;the theoretical foundation of stabil-ity analysis of time-average flows is also discussed from basic equations of fluids,andthe reason for the stability analysis of time-average flow can predict the frequency inthe saturation state is explaned.

此外，讨论了钝体尾迹稳定性分析的各种方法，其中从粘性流的稳定性方程出发严格推导了绝对/对流不稳定性的理论公式；从基本方程出发探讨了采用时均流场作稳定性分析的可行性，并解释了用时均流场作稳定性分析可以更好地预示饱和频率的原因。

To assess the importance of quasar outflow we have performed a series of studies on broad absorption line quasars, and have obtained the following results.

为了确定外流的重要性，中国科学技术大学天体物理中心开展了宽吸收线类星体的一系列研究，取得了一些进展：(1)宽吸收线区的紫外吸收物质的柱密度比原来预计高出2个量级，低电离吸收线形成于饱和的高电离吸收线区；(2)射电宁静的宽吸收类星体吸收物质主要在赤道面，并且不同的源吸收物质分布情况很不相同，而在射电强的类星体中，赤道和极向外流都是可能的；(3)共振散射线偏振表明，外流物质携带角动量。

Our research showed that the genetic variation of raptors and nighthawks was abundant and that the number of transitions and transversions in 12S rRNA and 16S rRNA genes increased gradually with p-distance and appeared not to be saturated, which indicated the phylogenetic relationship made in this study was really reflected.

所采用的12S rRNA和16S rRNA基因变异丰富，研究表明该基因的转换数和颠换数随着遗传距离的增加呈稳定性增长，未出现饱和现象；因此该基因数据能够提供有效的遗传变异信息，反映出较高真实水平的鸟类系统发育关系。

The Arabidopsis fad2 mutant, deficient in an endoplasmic reticulum localized x-6 desaturase, had significantly decreased polyunsaturates in the extrachloroplast membrane lipids.

拟南芥fad2突变体则缺乏一个内质网定位的X-6去饱和酶，它的多不饱和脂肪酸在叶绿体外膜脂中含量显著减少。

Silicon nanowires with different sizes and different surface terminations are studied with first-principles calculation.

采用第一性原理的方法计算了不同尺寸的(100)硅纳米线在H饱和及F饱和下的电子结构。

Unsaturated fatty acid in the seeds of those three species were abundant and its total content is over 89%.18 kinds of amino acid were detected,8 of which are essential amino acid.Nearly all kinds of mineral elem...

3种栝楼种子都含有大量的不饱和脂肪酸，不饱和脂肪酸总量均在 89%以上；氨基酸共检出 18种，必需氨基酸有 8种，占氨基酸总量的 2 9%以上；矿质元素种类齐全，高 K低 Na的特点明显，以 Ca的含量较高，人体必需的 Fe、 Mn、 Cu、 Zn等微量元素的含量分别在 2 0 1、 5 6、 2 3、 6 8以上。

The ray-path integrated growth is much smaller than that in electrojet conditions for the same values of driven electric field |ED| because the vertical component of group veloci...

在这一高度范围，波可能是不饱和的，增大L_N，使波在h=105km饱和的临界电场│E_D│值减小。上述计算结果可解释某些在反向电射流条件下，在Addis-Ababa观测到的10m波长雷达回波的特性。

The cetane number,a widely used diesel fuel quality parameter related to the ignition delay period and combustion quality of a fuel,has been applied to alternat...

脂肪酸链中的不饱和键是导致CN下降的最重要因素。不饱和键的数目及位置对燃料特性参数CN、IV、低温流动性和氧化安定性等都具有重要的影响。

The Research about the Synthesis of Phenylsulfonyl α,β-unsaturated Ketones and Their Applications in Asymmetric Diels-Alder Reaction Catalyzed by Lewis Acid and Chiral Titanium Reagents.

苯磺酰基取代的α，β-不饱和酮的合成及其在不对称催化Diels-Alder反应中的研究中文名称：苯磺酰基取代的α，β-不饱和酮的合成及其在不对称催化Diels-Alder反应中的研究

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。