螺旋形成

And a'hierarchical self-assembly'model, including the wrapping of amylose chains around SWNT and the hierarchical self-assembly of wrapped-SWNTs into the superstructural A/S-C, was put forward to explain the formation process of the helical A/S-C.

在此基础上对A/S-C螺旋结构的形成机理进行了探索性研究，并提出了&逐级自组装&模型：直链淀粉分子链首先缠绕到SWNT表面，缠有直链淀粉的SWNT在氢键作用力的驱动下逐级自组装成超分子结构A/S-C。

We have got the following conclusions from the simulation in the thesis:(1) In even diameter hole, the tangental velocity has the characteristic of combination vortex; with the boundary of points for maximal speed, the insides is norm forced vortex, the outside is norm free vortex; the axis symmetry of tangental velocity is very well.

等直径工件孔内的螺旋流场，其切向速度分布具有组合涡的特点，以最大切向速度点形成的面为界，内部是强制涡，外部是自由涡，其轴对称性很好。

Objective: Mannose-binding lectin is a plasma protein belonging to the family of collectins, composed of a N-terminal segment, helical coiled-coil hinge region, collagen-like stalk domain., and globular type C lectin domain or carbohydrate recognition domain. Full MBL biological function requires assembly to at least the tetrameric level.

目的：甘露聚糖结合凝集素(Mannose-binding lectin， MBL)是属于C型凝集素家庭胶原凝集素的一种血清蛋白，包括N末端区（N-terminal segment）、螺旋铰链区（helical coiled-coil hinge region）、胶原样区（collagen-like region，CRL）及球形C型凝集素区或糖识别区（carbohydrate recognition domain ，CRD）等4部分结构区域，四个亚单位的MBL形成有功能的多聚体。

The key point for preparing the isolated 1D metal driven nanowires is the non-stoichemetric additions of metal ions and thiolic ligands.

其中，金属离子与巯基乙酸的非等量反应是分离状态螺旋结构的纳米带形成的主要原因。

The fibrils of three levels,Which were macrofibrils of several tens micron in diameter,fibrils feW micron and microfibrils about 0.3 micron,were observed simultaneously with banded texture usingpolarized microscope.After annealing,fibrils in different levels relaxed to differentmorphology.Macrofibrils still oriented along shear direction,but fibrils relaxed to helical form,and microfibrils relaxed to waveform therefore the banded texture canbe seen.The smaller the diameter of fibrils was,the more easily the fibrils relaxed.Ori the other hand,the banded texture decoration of annealed unoriented filmsrevealed directly the distribution of directors within and out of domains and thevariation of directors on boundaries.

微纤分三个层次，即直径分别为数十微米的微纤束、数微米的微纤和0.3微米的亚微纤，退火后三个层次的微纤松弛成不同的形态，微纤束仍笔直沿剪切方向取向，微纤松弛成螺旋形，而亚微纤松弛成波浪形从而观察到条带织构：微纤直径越小越易松弛，另一方面，非取向态织构退火后由亚微纤形成的条带装饰结果直观地揭示了微区内外分子指向矢的分布和它们在边界上的变化。

The formation of the twelve helixes will not mean that you will become completely informed as a species.

十二个螺旋的形成将不意味你们将彻底成为有知识的一个族类。

However , the forming of the twelve helixes will be plenty to give you , as a species , a much bigger picture of who you are .

然而，作为一个族类，十二螺旋的形成，将极大地赋予你们是谁的更大的图片。

New helixes or strands are being formed as the light-encoded filaments are beginning to bundle themselves together.

新的螺旋或者股如同形成光形态那样—编码丝正开始将它们自己捆绑在一起。

The DNA is evolving. New helixes or strands are being formed as the light-encoded filaments are beginning to bundle themselves together.

DNA正在进化。新的螺旋或者股如同形成光形态那样-编码丝正开始将它们自己捆绑在一起。

This paper analyze the principle of the joggling in the cold rolling process for involute spline manufacturing and establishes the CAD model of the roller based on the principle of equal pitch helicoids.

本文通过对渐开线花键滚轧时啮合原理的分析，按照等升距螺旋面的形成理论建立了滚轧轮廓形设计模型。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失