查询词典 buttress root

Associated it we define a root system. In a suitable condition we define a Lie algebra to realize this root system, namely, using an Euler cocycle given by intersection matrix, we define an infinitely dimensional vector space with the Lie operation becomes a Lie algebra.

在适当的条件之下，我们给出了该根系的一个李代数实现，即利用该相交矩阵确定的一个欧拉cocycle和根系，我们定义了一个无限维向量空间和李运算，并且证明了这个无限维向量空间在该李运算之下构成一个李代数。

Both root and root cap are covered by a sheath-like structure called the coleorhiza.

根和根冠被一鞘状结构，即胚根鞘所覆盖。

For example,suficient of polynomials with integer coefficient is not integer root and is not repeated complex root etc.

包括整系数多项式的无整数根的充分性，整系数多项式无重根的充分性。

Secondly, through on-site and laboratory testing, studies the impact of root distribution density and distribution methods to root complex shear strength.

根系的抗拉特性符合一定的规律，对进一步研究根系的拉拔特性奠定基础。

But the content of MDA in leaf and root was not decreased on the contrary it was increased. It indicates that the damage of Plasma membrane in maize leaf and root have more complex mechanism.

但此时叶片和根系中MDA的含量并没有下降，反而增加，说明玉米叶片和根系组织的膜伤害有更复杂的机理。

Understanding of the various and gender-different morphology of the roots and complex root canals of maxillary first premolars, is of great value for the diagnosis and root canal therapy.

上颌第一前磨牙牙根形态多样并有显著性别差异，而且根管形态类型复杂。充分了解其解剖形态，对临床治疗具有重要意义。

Then we hypothesize that mesenchyma stem cells from DAC are heterology,which have the potential ability to regenerate root/periodontal complex structures as a new kind of seed cells. Therefore, this study focuses on characteristics of the mesenchyma stem cells at tooth root developing stage and the evaluation of the possibility of being seeds cells.

因此，本研究拟对牙根发育期相关间充质干细胞的生物学特性进行研究，探讨其作为种子细胞在牙根/牙周组织工程中应用的可行性，以期为组织工程化牙根/牙周组织构建优选新的种子细胞。

The areas of root concavity in most of teeth will cover the cervical third and middle third of the root.

大部份的牙齿其牙根面凹陷的范团均涵盖了齿颈部及中央三分之一的牙根。

There was, however, shorter root formation and a narrower root cavity compared with the contralateral incisor.

然而，也有人短，根系的形成和狭义根腔较对侧门齿。

Contractile root A specialized root developed by certain bulb-and corm-forming plants that serve to pull the bulb or corm down to the appropriate depth in the soil, e.g.

收缩根：在某些具有形成鳞茎或球茎的植物中特化的根结构。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。