切丛

词组短语

tangent bundle

与切丛相关的网络例句 [注：此内容来源于网络，仅供参考]

So the results made it clear that these two phytoplasma strains are one of the members of Aster yellows phytoplasma group (16SrI-B, rp-B group).

本研究同时还运用PCR-RFLP技术对上述两个植原体株系进行酶切图谱比较分类鉴定以及确定来源不同的苦楝丛枝病植株是否存在不同亚组的植原体株系复合侵染的现象，结果也表明这两个株系均属于翠菊黄化组B亚组，且采自不同省份的两个苦楝丛枝病植株没有植原体株系的复合侵染。

With the corm and scale of A. albus in Zigui County in Hubei Province as tested material, MS was used as the basic medium with different hormones to respectively match 10 kinds of media for induction, differentiation for tissue culture of A. albus The induced clumpy buds were cut into single plants and were put into the rooting medium of MS+NAA 0.1-0.5 mg/L and the effects of different hormone matching on callus formation, bud differentiation and rooting were studied.

方法］以湖北省秭归县的花魔芋球茎和鳞片作为外植体，以MS培养基为基本培养基，添加不同激素，分别组配成10种诱导培养基和分化培养基进行组织培养，然后将诱导的魔芋丛芽切成单株后接入MS+NAA0.1~0.5 mg/L生根培养基，研究不同激素配比对愈伤组织形成和芽分化以及生根的影响。

In exterior differentiation, one studies tensors, exterior algebra, tangent bundle, tangent vector fields, one-parameter groups action on a manifold, Frobenius's theorem, tensors fields, exterior differential form, integration on manifolds, Stokes's theorem etc.

外微分部分主要涉及外代数、切丛，光滑切向量场，单参数变换群，光滑张量场，外微分形式，Frobenius定理，外微分形式的积分，Stokes定理及其应用等。

Restricting the homeomorphism on the fibres of fibre bundles π:G(2,8)→S6 and τ:CP3 →S4 respectively,we get the set of complex structures on the tangent spaces of S6 and S4 respectively.

进一步，将此同胚限制于纤维丛π：G(2，8)→S6的每一纤维，给出S6的切空间上保定向的复结构

In this thesis, we mainly study the relations between compact minimal hypersurfaces of S~(n+1)(1) and the Clifford minimal hypersurface of S~(n+1)(1) by their spectrums, and the relations between unit tangent sphere bundle T_1 M and its base manifold M.

在本文中，我们主要通过谱研究了S~(n+1)(1)中的紧致极小超曲面和S~(n+1)(1)中的Clifford极小超曲面之间的关系，以及单位切球丛T_1M与它的底流形M之间的关系。

In this paper, we propose a dimension reduction method based on the tangent bundle.

本文提出了一种基于切丛的维数约简方法。

We define differential dynamic system on the tangent bundle and the master bundle.

定义了建立在切丛和主丛上的微分动力系统。

The tangent bundle of the manifold can not only describe the structure of localcharacteristics, but the overall shape of the structure of convection can be described.

流形上的切丛不但能够刻画流形局部的结构特征，而且对流形整体的结构也能够进行描述。

Itshows that the dimension reduction algorithm based on the tangent bundle is an effectivemethod by dimensionality reduction experiments on handwritten data and breast cancer data.

通过对手写体数据的降维实验和Breast Cancer实验表明，基于切丛的维数约简方法是一种有效的降维算法。

And then adding NAA at low concentration in MS was used to give rise to roots. We also found that lower level of hormone could control effectively browninng and vitrifaction during the culture and G1 n (6mg/L) and AgNOj (2mg/L) supplemented in shoot induction media could improve the shoot information rates apparently (about90%).The whole period of plant regeneration from leaflets of peanut could be divided as five steps: germination - shoot induction -shoot elongation-rooting- tranplant.

用1／2MS培养基萌发花生种子，9-10d后，从无菌花生苗上切取幼嫩叶片中部为外植体。2500Lux光照和27±1℃条件下，在诱芽培养基(MS+BA3mg／L+NAA0.8mg／L+AgNO_32mg／L十Gln 6mg／L)培养12-14d即可观察到明显芽点或瘤状突起，较前人报道的培养时间大大缩短了，4w后芽点进一步发育成丛生芽，芽诱导率达90.2％，每个外植体平均产9个丛尘芽，然后转至培养基MS+BA3 mg／L+AgNO_32 mg／L上诱导芽的伸长，3-4w后可长至3-4cm，切下带有2-3片叶片的幼芽移至生根培养基(MS+NAA0.8mg／L+AgNO_32mg／L)，1w后切口处可见白色不定根形成。

与切丛相关的网络解释 [注：此内容来源于网络，仅供参考]

bitangent developable surface：双切可展曲面

双切锥线 bitangent conics | 双切可展曲面 bitangent developable surface | 双切的线性丛 bitangent linear complex

submersion：淹没

微分流形:一、 流形的基本概念:流形的定义和基本例子,子流形,切空间和切丛,光滑函数、光滑映射及切映射. 要求了解球面、环面、射影空间等基本例子,并了解一维、二维流形的分类. 要求了解浸入(immersion)、嵌入(embedding)、淹没(submersion)和微分同胚的概念.

tangent bundle：切丛

做"切丛"(tangent bundle) 上的联络论,而18 数学传播 25卷4期民90年12月(Minkowski) 发现经由下面的对应:乎完全一样. 因此海森堡(Heisenberg) 认

unitary tangent bundle：酉切丛

unitary system 一元化制度,(构造型式)单一体系 | unitary tangent bundle 酉切丛 | unitary theory 疾病一元论

tangent vector bundle：切向量丛

tangent vector 切矢量,切向量 | tangent vector bundle 切向量丛 | tangent vector space 切向量空间

tangent orthogonal frame bundle：切正交标架丛

tangent offset 切线垂距,切线偏移,切线支距 | tangent orthogonal frame bundle 切正交标架丛 | tangent plane 切面,切平面,切线面

tangent cone：切线锥面

tangent bundle 切丛 | tangent cone 切线锥面 | tangent curve 正切曲线

vector bundle：向量丛

进一步的,当流行本身的拓扑结构和切空间上的线性结构发生关系--也就获得一簇拓扑关联的线性空间--向量丛(Vector bundle). 流形在实际应用中起重要作用的还有两个方面:一个是研究几何形体的性质(我们暂且不谈这个),

cerviciplex：卵巢颈切掉术

cervical vertebra tractor 颈椎牵拉器 | cerviciplex 卵巢颈切掉术 | cervico- 颈,颈丛

bitangent linear complex：双切的线性丛

bitangent developable || 双切可展曲面 | bitangent linear complex || 双切的线性丛 | bitangent plane || 二重切面