对称部分的
- 与 对称部分的 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 Schur subspace iteration method is applied for the dynamic characteristic analysis of damped structure vibration system and coupled fluid-structure system. This method avoids complex computation and has good numerical stability. A accelerated technique and a pre-process method for the system matrix are suggested to improve the computational efficiency. The generalized uncoupled equation is obtained from the Schur matrix and a back substitution scheme of response computaton is developed.
第三部分将非对称特征值问题的Schur子空间迭代法应用于非经典阻尼结构振动系统和流固耦合系统的特征值分析,建立了相应的具体算法,并给出了用以提高迭代收敛速度的迭代加速和矩阵预处理等实用技术;利用Schur矩阵的结构特点,推导了系统方程的动力解耦形式,给出了响应计算的回代求解格式。
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with the development of satellite navigation communication,antenna is a very important unit,performance of the satellite navigation communication system is affected by it partly.a new type of bifilar helix for satellite navigation communication system is introduced,and the traving-wave bifilar helix is analyzed briefly.meanwhile,the design and the test results are given.the results show that the antenna possesses excellent circular hemispherical beam with wide angle circular polarization and better impedance match,and has a compact structure and high integration.it can be applied in caps systems successful.
小 摘要:随着卫星导航通信技术的迅速发展,天线作为卫星导航通信系统中的重要部分,在一定程度上决定着卫星导航通信系统的性能。介绍一种用于卫星导航通信系统的双臂螺旋天线,讲述爬行波式螺旋天线的设计过程,并给出最终测试结果。结果表明,该天线具有优良的圆对称半球波束,良好的广角圆极化特性和优良的阻抗匹配特性,其结构简单、紧凑,为通信入站回传提供了一种优良的选择。
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In section 3 ,we will introduce bilinear form B on Lie colour algebra L. is called quadratic if B is color symmetric .non-degenerate and invariant .In this case ,B is called an invariant scalar product on L .
第三部分介绍了具有双线性型B的李color代数L,如果B是color对称的,非退化的和color不变的,则称是二次李color代数,B则称为不变数量积,给出了理想非退化的定义。
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A series of homemade needles and guides for underlying guided suture was used to treat the skin laxity in 42 cases of facial paralysis and 15 cases of facial aging science 2006. All of them were used the suture technica of deep-seated suspensory . Results 40 in 42 facial paralysis cases obtained satisfactory effect, and the effect of them were steady in 6 to 12 months followed-up .
自2006年以来我们采用自行设计的李氏埋没导引缝合针和李氏埋没导引缝合器,以埋没导引的方法,通过深部组织缝合悬吊的技术治疗面神经瘫痪遗留的面部表情不对称42例,其中完全性面瘫31例、部分性面瘫11例;治疗面部老化造成的皮肤松垂15例。
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This thesis mainly focused on the sidearm effects in catalytic Wittig-type olefination and catalytic asymmetric 1, 3-dipolar cycloaddition between nitrones and alkylidene malonates.
本文主要研究了催化的叶立德烯基化反应及催化的不对称1,3偶极加成反应中的边臂效应。在论文的第一部分,我们设计、合成了聚乙二醇负载的烷基碲化合物33(Bu-Te-PEG-Te-Bu)。
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In the third part of this dissertation, based on the leading compound ACPD, we design and asymmetric syhthesized two analogues: 56 and 57 by using Seebach's self- regeneration strategy to synthesize α,α-disubstituted amino acid as the key step.
论文的第二部分,我们利用我们所开发的合成α,α双取代氨基酸的方法,以对甲基苯甲醛为原料,经过分子内付克烷基化、氧化银氧化和氢化等16步反应,完成了代谢型谷氨酸受体拮抗剂-AIDA的不对称合成。
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Thus it is obvious that the weak homology existedamong genomes A, B, D and 〓. However, the rare unreduced gemetes and near-unreduced ones with the loss of several chromosomes could be produced by the highlyunequtional division of univalents at the first meisis and the normal second division,which gave the F1 hybrid the partial fertility.
但通过第一次减数分裂时单价体的极不对称的分离及正常的第二次分裂,可形成少量未减数配子和丢失了少数几条染色体的近未减数配子,使杂种〓表现部分可育性。
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Sometimes armed with stinging hairs; epidermal cells of leaves, sometimes stems, perianths mostly with prominent cystoliths punctiform to linear; Leaves alternate or opposite, stipules present, rarely absent; leaf blade simple. Inflorescences cymose, paniculate, racemose, spicate, or cluster-capitate, usually formed from glomerules, sometimes crowded on common enlarged cuplike or discoid receptacle, rarely reduced into a single flower. Flowers unisexual, rarely bisexual in partial flowers; actinomorphic, very small,(1-)4- or 5-merous, rarely perianth absent in female flowers.
有时具有蛰毛的刺;叶的表皮细胞,有时茎和花被的表皮细胞大部分有显著的点状或线形的乳状体;叶互生或者对生,托叶有,很少无;单叶花序聚伞状,圆锥状,总状,穗状,或者丛生头状花序,花单性,部分花两性;辐射对称,小,(1-)4-或者5瓣,很少在雌花内无花被。
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The pneumatic percussive steerable mole adopts the percussion part of the underground mole, which has a bi-stable steering head updated from the old symmetrical stepped head. So it can construct along a curve path and implement deviation correction.
其中,气动冲击式轨迹可控穿孔机采用了地下穿孔机的冲击部分,并将其原来的对称式阶梯形冲击头改进为具有导向功能的双稳式导向穿孔头,从而使穿孔机可以进行曲线轨迹施工以及当发生偏离时可以进行纠偏。
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Xiaowan arch dam site has excellent topographic conditions, while geological structures in both abutments are complex, such as, faults, altered rock, mantle rock, etc.
在建的小湾水电站坝址具备修建高拱坝的优越地形条件,但地处西南地区著名的&三江构造带&的南段,地质构造较复杂,坝基及坝肩抗力体内存在部分断层、蚀变岩体和卸荷、风化岩体等地质缺陷,将引起两岸坝肩岩体变形不对称、压缩变形量增大以及坝肩局部岩体承载能力低,直接影响到拱坝与地基系统的正常运行和整体稳定安全性。
- 推荐网络例句
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I will endeavour to find you some assistance.
我尽力帮你找人帮忙。
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At first I only know bruck is the idol of American younglings, afterwards I returned back to Taiwan ,even in Beijing last year ,I saw her poster everywhere, I was so surprised at her charm.
起初我只晓得布鲁克雷德丝是美国少男少女崇拜的偶像,后来回台湾,甚至去年在北京,居然也四处看见她的海报,才惊讶她的魅力之大。
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Ah may dee:You are chinese living in a democratic country.
你是居住在民主国家的中国人吧。