二源的
- 与 二源的 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The results indicated that allopolyploid species had changed greatly during evolutionary history compared with their ancestral diploid species.
实验结果说明了在基因组进化历史中,异源多倍体物种与二倍体祖先种相比发生了很大的变化。
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Here we used ferrocene , xylene and argon as the catslyst precursor, carbon source and carrier gas, and used alundum tube as reaction chamber.
以二茂铁、二甲苯、氩气分别为催化剂先驱体、碳源、载气,直径100mm的刚玉管为反应室,石英玻璃为基底,催化热解制备定向碳纳米管。
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Sources and incorporation of latest bench mark data
源并纳入了最新的基准数字,尤其是二零零
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Data structure, the establishment of a binary tree on the source code and examples.
数据结构,关于二叉树建立的源码和例子。
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And the best concentration of cellobiose was 10g/L. According to the reported gene sequence of Halomonas sp.
因此确立了纤维二糖作为碳源,用其培养菌体的较佳浓度为10g/L。
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By time-varying filtering, we realize the signal selectivity and interference suppression, especially for the signals with time-varying power spectrum. It is shown herein that conventional eigenstructure based methods are lower dimensional special case of the time-frequency subspace fitting method. The closed-form array response estimation algorithms for blind source separation in wireless communication is also developed in the dissertation by exploiting the data structure of second-order statistics of the array output in the presence of multipath. The proposed method achieves array response estimation with little constraint on signal property and propagation environment such as scatters or angular spread. Moreover, the array utilized here can be of arbitrary geometry and even uncalibrated. Since the closed-form solution is obtained, no misconvergency may occur and large amount of computation can be saved. The equivalent feed model and corresponding optimization designation are proposed to realize the downlink multi-user selective transmission. By coherent and non-coherent superposition of the electromagnetical field, multiple beams can be formed using a single array, so that each co-channel user signal is transmitted in each beam and will not interfered with each other. The proposed system scheme implements the digital beamforming and the channel allocation in the base band, therefore is suitable for the utilization of the radio software technology. The feasibility and effectiveness of the proposed model are proved by the RF experiment.
在窄带条件下,GSC-SSF方法还可以提高阵列的虚拟孔径,从而提高估计的性能;可以证明,Cyclic DOA 和SC-SSF方法可看作该方法的特例或近似; 3、提出了二维GSC-SSF方法和宽带谱相关DOA矩阵方法,利用信号的循环平稳特性解决了宽带条件下二维 DOA 估计问题,并具有阵元数少、计算量较小的特点; 4、提出了时频子空间拟合和宽带时频DOA估计算法,将联合时频分析的理论和方法引入到阵列信号的空间谱估计研究中,利用时变滤波实现信号选择性测向和干扰抑制,特别适合于谱时变信号;可以证明传统特征结构法可看作是时频子空间拟合方法的特例; 5、提出了多用户环境下阵列响应的估计方法——CARE方法,该方法对信号结构和传播参数(主要是散射源分布与角度散布)的约束较少,适用于各种几何结构的阵列甚至未校准的阵列,能够直接得到阵列响应的闭式解,因此计算量小、稳健性好,不存在收敛问题; 6、提出了针对多用户下行选择性发送的阵列等效激励模型、优化设计方法及其系统实现方案,通过空间场的相干叠加与非相干叠加使得单一阵列能够形成多个波束,并保证各波束内的用户信号各不相同且相互干扰最小;其系统方案具有在基带实现数字波束成形、信道分配并便于软件无线电实现的特点,其有效性已得到外场实测数据的证实。
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"Stretcher bars Flower" as the county a widespread folk dance of local characteristics, the history of the origins of the immortals "Three Xian Gu" sacrificial ceremony in order to carry statues of dancers of "driving" the main line, are ritual dance team leader in the dance species gradually evolve into a self-entertainment of the masses of the Plaza art, a flower by two-person stretcher bars, exercise on a horizontal bar made of bamboo materials, the carrying of objects known as:"bar box", people from bars handheld bar charge card, its paddle-shaped, performers have jun bars, ugly bars on the points, when抬杠should not exercise on a horizontal bar over the shoulder, should not bar use of hands, they make the same direction, opposite, running and carrying the show, high overhead, low hip tip, are the scope of activities of exercise on a horizontal bar, the basic action has Yan mallard water, tiger big kick tail, large clean waiting for, performing routines倒卷curtain has pearls, Wufu want longevity,十三太保,二十八宿and so on, just Taihua no accompaniment instruments.
&抬花杠&为该县广泛流传的一种具有地方特色的民间舞蹈,源起历史上对神仙&三仙姑&的祭祀仪式,以舞者肩扛神像&过驾&为主线,是祭祀舞队中的领队舞种,逐渐演变成为群众自娱性的广场艺术,一幅花杠由二人抬,杠子用竹料加工制成,所抬之物称为:&杠箱&,领杠人手持押杠牌,其为船桨状,表演者有俊杠、丑杠之分,抬杠时杠子不能过肩头,不能用手扶杠,二人做同向、相向、相背而抬的表演,高至头顶,低至臀尖,都是杠子的活动范围,基本的动作有燕凫水、老虎大蹶尾、大抹坐等,表演套路有珍珠倒卷帘、五福捧寿、十三太保、二十八宿等,泰华刚没有任何乐器伴奏。
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Systemic levels of IL-6, IL-8 and TNF- a increase in patients with acute pancreatitis and correlate with the severity of the disease.A key regulator of cytokine induction is the pleiotropic transcription factor nuclear factor- K B.
核因子-κB(nuclear factor-kappa B,NF-κB)是由Rel蛋白家族成员形成的同源或异源二聚体,它几乎存在所有的细胞,不同的二聚体与不同的DNA序列结合,亲和力和转录激活能力是不一样的。
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Lime-ash technique (cinder ash mixed with lime or cement) using for roadbed condition has many virtues.
用粉煤灰、生石灰填筑公路路基有许多优点,二灰土具有较高强度、整体性好、良好的水稳性和抗低温能力、施工方便、造价相对较为经济、提高土源利用率优点,因此,在北方具备条件的地方,比较广泛的采用二灰土这种材料作为道路底基层或基层,收到良好的经济与社会效益。
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The current are outputted to the electric engine after capacitance commutation, N pairs of electric engine coils are connected in series by two, 2N coil diodes are connected together with reversal direction; N PNP type triodes are connected together on the N pairs of electric engine coils in series; 2N switcher are connected at the lower part of the N pairs of electric engine coil in series; 2N the first one-way diode are connected between the PNP type transmitting pole and the drain electrode of the switchers; N the second one-way diodes are connected together between the collecting electrode of PNP type triode and the source electrode of 2N switcher.
电流经串联电容整流后输给电机,N双的电机线圈二二并联,2N个线圈二极管相互反方向连接;N个PNP型三极管串联在N双的电机线圈的上部;2N个开关器件串联在N双的各个电机线圈的下部;2N个第一单向二极管接在各PNP型三极管的发射极和各开关器件的漏极之间;N个第二单向二极管接在N个PNP型三极管的集电极和2N个开关器件的源极之间。
- 推荐网络例句
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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。
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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。
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There is no differences of cell proliferation vitality between labeled and unlabeled NSCs.
双标记神经干细胞的增殖、分化活力与未标记神经干细胞相比无改变。