查询词典 helix

This method undertakes comparative getting the area between the spare parts to equation of geometry of the face in model of CAD of different spare parts above all - surface contact relation and type, use amount coming back theory general face - the face expresses to be helix; relative to instantaneous motion next, the helix that goes up to many surface contact undertakes making operation,; of helix of the motion when making the opposite very short time between the spare parts is final, according to the spare parts abut concern plan and abut spare parts move relatively helix, undertook an analysis to assembling instantaneous of whole of the spare parts in the model to concern with drive movably, give out not between the method of calculation of helix of opposite instantaneous motion between photograph adjacent spare parts and them but the judgement method of drive sex.

该方法首先对不同零件CAD模型中面几何方程进行比较得到零件之间的面-面接触关系和类型，并应用旋量理论将面-面相对瞬时运动表示为螺旋；然后，对多个面接触上的螺旋进行交运算，生成零件之间的相对瞬时运动螺旋；最后，根据零件邻接关系图和邻接零件相对运动螺旋，对装配模型中零件整体瞬时可动性和驱动关系进行了分析，给出不相邻零件之间的相对瞬时运动螺旋计算方法和它们之间可驱动性的判定方法。

ABSTRACT:The protein encoded by gene Nhlh2 (nescient helix-loop-helix 2, also known as HEN2 or NSCL2) is a new member of basic helix-loop-helix transcription factor family and is specifically expressed in nervous system, especially in neuroendocrine tissue.

Nhlh2（ nescient helix-loop-helix 2）基因，又名HEN2(HUA ENHANCER 2)和NSCL2(neuronal stem cell leukemia 2 )（或NSCL-2），其编码蛋白是碱性螺旋－环－螺旋转录因子家族的新成员，在神经系统中尤其是神经内分泌组织中特异性表达。

After adjusting the upper angle of helix, protracting crus of helix, and repairing auricular tubercle, antitragus and defects, the frameworks of helix and antihelix were cohered to form the cartilage framework.

通过拼接矫正耳轮上角及延长耳轮脚，点补形成耳轮结节、对耳屏及修整欠缺处，然后，耳轮与对耳轮支架进行粘合，形成胶合软骨支架。

The prediction of secondary structure showed that Family chensirin-2 and dybowsin-2 are extended coils, and the rest families have one or two a-helix where polar amino acids are located on one side of the helix wheel and apolar amino acids on the other side, attaching an amphiphilic property to the whole helix.

除dybowsin-2和chensirin-2家族为自由卷曲抗菌肽外，其余各类抗菌肽均能形成一段至两段a-螺旋结构，极性氨基酸和非极性氨基酸分别位于螺旋轮的两侧，使蝶旋呈两亲性。

Effects of helix structure disorder about the hydrogen bond length and helix angle on charge transport of Poly-Polyhave been studied. The results indicate that the hydrogen bond length disorder has a significant effect on charge transport,while the case is contrary in the situation of helix angle disorder.

在双螺旋结构无序中研究了氢键键长无序和螺旋角无序对Poly-Poly电荷输运的影响，结果表明：氢键键长无序对其电荷输运有重要的影响，而螺旋角无序对其电荷输运影响不大。

In order to model complex hair styles, such as curly hairs and wavy hairs, we first construct five types of surfaces and three curves: curved cylinder, curved circular frustum, curved prism, curved edged frustum, curved revolving paraboloid, and curved cylinder helix, curved circular frustum helix and curved revolving paraboloid helix. Then we give the expressions for points and normal vectors on these surfaces, suitable to composition.

为了构造复杂发型，例如卷发发型和波浪发型，我们首先构造了五种曲面和三种曲线：弯曲圆柱面、弯曲圆台面、弯曲棱柱面、弯曲棱台面和弯曲旋转抛物面，以及弯曲圆柱螺线、弯曲圆台螺线和弯曲旋转抛物螺线，并且给出了这些曲线曲面上适合于拼接的点和向量的表示方式。

According to the helix theories of cylinder,the essential factors of helix with torus are analyzed,and the parametric equation of helix on torus is given based on analytic geometry.

根据圆柱螺旋线理论，分析了形成圆环螺旋线的要素，并运用解析几何方法建立了圆环螺旋线的参数方程。

It was found that the silk fibroin obtaineddirectly from anterior and middle regions of middle division of silk gland is in orderedstate, assumed to be in nematic form, but not observed in posterior region, in whichliquid silk fibroin is in coiled coil and some α-helix forms. In the middle region of middle division there is a relatively regular arrangement for the α-helix, and there is arelatively regular arrangement for β-strand and loosed α-helix in anterior region.

在熟蚕丝腺体的中部前、中段的丝心蛋白处于类向列型液晶的有序态，而中部后段中则观察不到此有序态，而是呈无规线团和一些α-螺旋结构，而且中部前中段的结构也有区别，中部中段的有序态为α-螺旋结构的相对规则聚集，而中部前段的则为β-伸展链和松散α-螺旋结构的相对规则聚集。

In Polymer, helix is a quite universal configuration Recent experiments show thatsome polymers such as bacterial flagellar filaments can form bistable helices in ionsolutions, which means that left handed helix and right handed helix can coexist in thesame environment The mechanism of this phenomenon has not been explainedsatisfactorily.

在高分子中，螺旋是一种很普遍的高分子组态。近来实验发现，一些高分子，如细菌鞭毛丝，在离子溶液中能够形成双稳态螺旋，即左螺旋与右螺旋在相同的条件下能够同时存在。

In order to design reliable wire ropes by investigating the deformation characteristics of wires helix, axial strain's explicit expressions and radius' expressions of wires helix were deduced in which wires were bearing axial load and just touching each other. Additionally, cross section curve of helix wire, contact radius, clearance angle, width and ratio in wires' same layer were obtained.

为了掌握轴向载荷下螺旋钢丝的变形特性以合理设计钢丝绳，推导了螺旋钢丝轴应变显式表达式，给出了螺旋钢丝截面曲线表达式和同层螺旋钢丝正好满足接触时钢丝的半径及接触半径、间隙角、间隙值和间隙率表达式。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？