查询词典 helix

On the basis of the helix theory proposed by the authors,the relationship between stereostructure and rotatory direction is analyzed for the fused polycyclic compounds.

通过笔者提出的螺旋理论，分析了多环稠合化合物的立体结构和旋光方向间的关系。

Two men in shirts and ties run back to a white van with DNA double helix ROUSH TECHNOLOGIES logo on the side.

两个穿衬衫打领带的人跑回一辆白色的旅行车，上面有个DNA的双螺旋「劳许科技公司」的标志。

e-PTFE was implanted into the pitting area after subcuntaneous disjunction. Results: 15 cases were followed for about 3 and 6 momths after implant of e-PTFE, including cases with saddle nose, pitting deformity of orbit, congenital lip cleft with depressed soft tissue around pyriform opening, parbial defect of helix. In these cases, satisfaction rate is evaluated as high as 97.9%, unexpected tissue response was not shown in this clinical trail.Conclusion: Depended on this clinical trail, we believe local e-PTFE manufactured by Shanghai Suo-kang Medical Implants Co., Ltd.

由于e-PTFE的组织相容性好，在80年代初期一些发达国家已经应用于整形美容外科[1]，尤其应用于隆鼻术、面部凹陷畸形的整复、唇线增高、唇加厚、鼻唇沟过深的整形美容术、耳廓缺损等手术中，学者们认为e-PTFE排斥反应的发生率低，弹性和硬度与软组织相似，周围组织细胞能够长期进入移植物内，不形成纤维囊，在整形美容外科领域有重要的应用价值。

Replicas of DNA are made when the double helix unwinds as a result of helicase enzyme action and the separated strands serve as templates along which complementary nucleotides are assembled through the action of the enzyme DNA polymerase. The result of the two new molecules of DNA each containing one strand of the original molecule, and the process is termed semiconservative replication.

DNA 的复制在解旋酶解开 DNA 链时开始，解开的链作为模板 DNA 聚合酶的作用下结合相对应的核苷酸，最终形成了两条新的 DNA 的链，每一条的链含有一条链原来的 DNA 单链，因此又叫做半保留复制。

Semiconservative replication :The two strands of DNA double helix are separated, each strand serves as a template for the synthesis of a new complementary strand, producing two daughter molecules. Each daughter molecule has one parental strand and one newly synthesized strand.

半保留复制： DNA 生物合成时，母链 DNA 解开为两股单链，每股单链分别作为模板，以 dNTP(dATP 、 dGTP 、 dCTP 、 dTTP)为原料，按照碱基配对(A － T 、 G － C)规律与模板上的碱基配对，经依赖 DNA 的 DNA 聚合酶催化，合成一条与模板互补的新链，新形成的两个子代 DNA 与亲代 DNA 碱基序列一致，子代 DNA 分子中一股单链是从亲代完整地接受过来，另一股单链是新合成的，故称为半保留复制。

Silicium in our body,triple-helix, size: 1,08 meters ,population 12 billion,other

我们的身体由硅原子组成（注：我们地球人是碳原子组成），DNA为三螺旋结构，身高1.08米，人口12亿

We also got STM images of denatured fibroin under stress or by methanolin molecular level. We found the conformation of silk fibroin is changed from α-helixand random coil structures to β-strand and loosed α-helix formation. We employed the STM to explore the structure and morphology of silk fibroinin the middle silk gland of mature silkworm.

我们在分子水平上对在冰冻和甲醇处理下的丝心蛋白的变性情况进行了STM研究，我们发现丝心蛋白的构象由α-螺旋结构和无规线团的结构向β-伸展链和松散折叠α-螺旋结构转变我们还用STM对熟蚕的中部丝腺体中的丝心蛋白的结构形态进行了研究。

First of all, the improving feeding helix can not only get material into the ball mill successfully, but also increase ventilated proportion; Secondly ,making use of all sorts of new scaleboards can reform the working condition of skive substance and raise the material adaptability; Third, separating storehouse board, have not only increased control material to flow, and balanced each storehouse smash the function of ability, but also realize thickness pellet grade role; Grind tail storehouse choose hyperboloid drum liner, in axial and circumference direction have incline curved surface, can not only increase steel ball lateral grade , but also still raise steel forge , steel ball grind efficiency.

进料口螺旋的改进，不仅解决了堵料现象，而且加大了通风面积；各种新型衬板的使用，对研磨体运动状态的调节以及对物料的适应性都有了较大的改善；隔仓板不仅增加了控制料流及平衡各仓粉碎能力的功能，而且可以实现粗细颗粒的分级作用；磨机尾仓选用双曲面衬板，在轴向和圆周方向均有倾斜曲面，不仅能够增加钢球的横向分级，还能提高钢锻、钢球的研磨效率。

Firstly, the parallel mechanism parameters are designed by theory, and the two spherical hinges of cue instrument on the mobile and base platform are fixed up separately. Under the condition that the mobile platform parallels the base platform, the center of spherical hinge of the cue instrument on the mobile platform are moving along a spherical helix corresponding to the center of spherical hinge on the base platform.

首先按理论并联机构设计参数，将一球杆仪的两个球铰分别固定在保持平行的动、静平台上，令球杆仪在动平台上的球铰中心相对于静平台上的球铰中心做球面螺旋线运动。

Fluid flow rate in Shan bolt pump is low, its rotator is to roll within the stater, But, that the determinant hardness may come according to the character transferring medium selected, is beneficial to a factor since the Shan bolt pump has these, makes it also apply to the liquid transporting the suspension containing hard quality solid particle, usage than and the soft solid suspension liquid (the glue waits fruit thick, soft) here Shan bolt pump transporting viscosity20,000 mpas liquid, Give modification if its standard is designed, increase set up one helix give material an implement, it can transport 200,000 mpas liquid then in the leading-in rotator and stater cavity more easy to use viscidity liquid, therefore it is one kind of the pump being much used for transportinghigh viscosity.

单螺杆泵中的流体流速低，它的转子是在定子内滚动，而定子的硬度又可根据输送介质的性质来选定，由于单螺杆泵具有这些有利因素，使它也适用于输送含有硬质固体颗粒的悬浮液，及软性固体悬浮液此单螺杆泵可使用于输送粘度2万mpas的液体，所以它是一种常用来输送高粘度的泵。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷