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In Pteridaceae s. l., false veins can be found in Pteris, Adiantum, and vittarioids; in this thesis, Energy Dispersive X-ray element analysis and histochemical studies were used to confirm the false veins of these three taxa are composed of spicular cells – a kind of long, silica depositing epidermal idioblast.

於广义的凤尾蕨科中,假脉可见於凤尾蕨属、铁线蕨属以及书带蕨类群;本论文利用能量色散X光光谱仪元素分析,配合组织化学染色的结果,证实此三类群的假脉均是由具二氧化矽堆积的矽异形细胞(spicular cell, SC)所构成。

As the results of the diageneses research show, the Tertiary reservoir composed of clastic rock in the Yuanyanggou region can be divided into the early diagenetic stage and the late diagenetic stage, aggregately five subphases.

成岩作用研究结果表明,鸳鸯沟地区第三系碎屑岩储层可划分为早成岩和晚成岩两个阶段,共五个亚期。

Data obtained by thin-sections analysis, cathodoluminescence emission analysis and SEM/EDX show that carbonate cements seem to be the uppermost cements composed of ferroan sparry calcite and ankerite and are distributed mostly in the depth interval of 100 m below the unconformity, with their contents increasing with the depth.

通过薄片观察、阴极发光、扫描电镜/能谱分析,认为碳酸盐胶结物是研究区砂岩最主要的胶结物成分,其主要类型为方解石和铁白云石,垂向上含量随深度增加而增加,多集中分布在白垩系和侏罗系之间的不整合面之下约100 m的范围之内。

The main theory results includes:(1) Using the properties of Hilbert transform, perfectly reconstruction and new type of lifting scheme, a new type of dual-tree binary coefficients complex wavelet with linear phase is achieved.(2) For linear systems that can be diagonalized by GFT and DST-II matrices, an efficient MGM method is proposed, convergence is proved.(3) We discuss the algebraic structure when Toeplitz matrix is transformed by multi-band wavelet,show that Toeplitz matrix is composed of generating function is transformed to a band and sparse matrix when wavelet applied to this matrix, based on the above results, an efficient solution of Toeplitz equations is obtained, and the computational complex is O,where N is the order of matrix.

理论成果主要包括:(1)对于对偶树二进制系数复数小波,利用Hilbert变换对性质、完全重构条件并结合新的提升格式构造研究了含参系数多进制小波构造方法,作为特例得到具有线性相位的对偶树二进制系数复数小波构造方法;(2)对于广义离散傅立叶变换与正弦变换对角化系统,提出了高效、快速的多重网格算法,理论上证明了算法的收敛性;(3)研究了Toeplitz矩阵在多进制小波变换下的代数结构,验证了多项式生成函数构成的Toeplitz系统在小波变换下的稀疏带宽性质,从而建立基于小波变换求解Toeplitz系统的快速求解方法,运算量级控制在O,其中N为系统的阶。

It can be composed as a set of smaller rooms connected together by corridors.

它可以是由通道相连接的较小空间的组合。

Moreover, most delayed intelligent systems composed of neural networks or T-S fuzzy models can be depicted as SNNM for controller synthesis.

另外大多数包含神经网络或T-S模糊模型的时滞智能系统也都可以转化为SNNM的形式,以便于用统一的方法进行控制器的综合。

The first elucidates the meaning and content of the research of mathematical culture, which can be depicted as a powerful dynamic system, the core of which is the mathematics science, and parts are composed of correlated cultural fields which are interfered by mathematical idea, spirit, method, technology and theory such as.

数学文化可以表述为以数学科学为核心,以数学的思想、精神、方法、技术、理论等所辐射的相关文化领域为有机组成部分的一个具有强大功能的动态系统。数学文化涉及的基本领域包括哲学、艺术、历史、经济、教育、思维科学、政治及各门自然科学。

But life can not be composed only of broken-hearted, we should smile.

但人生不能只由伤怀组成,我们应该微笑。

Through the noise analysis between circular oscillators composed of general differential amplifer element and of capacitive coupling differential amplifier element, it is found that the later,due to its band-pass and dynatron characteristics,provides a better anti-noise performance,which can be used in VCO circuits having a high requirement on frequency stability.

通过对采用由普通差分放大器单元和容性耦合差分放大器单元构成的环行振荡器的噪声分析得出,由容性耦合差分放大器单元构成的环行振荡器,因其带通特性和负阻特性而具有较好的抗噪声能力,可用于对频率稳定度有较高要求的VCO等电路中。

Along its eastern margin rises the mighty Sierra, miles in height, reposing like a smooth, cumulous cloud in the sunny sky, and so gloriously colored, and so luminous, it seems to be not clothed with light, but wholly composed of it, like the wall of some celestial city.

山谷东部边缘上耸立着数英里高的谢拉山,它气势磅礴,横卧在山谷边上,犹如停留在晴空中的一块平静的积云。它的色彩是那么壮丽辉煌,那么灿烂夺目,不由地使人感到它不是披上了一层金光,而本身就是一团光,像天国的城墙一般放射出万道光芒。

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推荐网络例句

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石!

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻,也许正是在通往天国的路上,我体验着这白色的晕旋。

When you click Save, you save the file to the host′s hard disk or server, not to your own machine.

单击"保存"会将文件保存到主持人的硬盘或服务器上,而不是您自己的计算机上。