查询词典 helix

The author reviews the science and technology history home and abroad,and introduces the neoteric revolution in this field,focusing on the four scientific discoveries-the Big Bang,the quark model in material structure,the plate structure,and the DNA double helix structure-and the five technological invention-nuclear technology,space technology,information technology,biotechnology and nanometer technology-in the 20th century and their academic base of theory of relativity and quantum mechanics;and the writer...

回顾了中国和世界科学技术发展的基本历程；介绍了近代的科学革命和技术革命；重点论述了20世纪科学发现和技术发明的理论基础是相对论和量子力学，以及20世纪的四大科学发现——宇宙大爆炸理论、物质结构夸克模型、大地构造板块学说和DNA双螺旋结构和五大技术发明——核技术、空天技术、信息技术、生物技术和纳米技术；展望了21世纪科技发展前途；提供了油气开发与利用的信息。

For example, the growth initial condition selects the conformation of binormal zinc oxide helix, though the normal configuration is also stable only from the aspect of energy.

例如，我们发现如果初始生长条件选择了binormal型的氧化锌纳米螺旋带，尽管从能量的角度来说，normal型的氧化锌纳米螺旋带也可以稳定存在的，那么最后生长的为binormal型的氧化锌纳米螺旋带。

If uses SLS double helix to squeeze oar machine and bosomy type or belt to wash oar machine combination to use, can raise black liquor recovery rate 90% above, carrying out a proof is feasible.

倘采用SLS型双螺旋挤浆机和鼓式或带式洗浆机组合使用，可以将黑液提取率提高到90%以上，实践证实是可行的。

Largely unstructured in solution, linear peptides fold into an amphipathic helix upon binding and insert into the target membrane, leading to breakdown of the transmembranal potential and of ion gradients, thus causing leakage of cell contents, resulting finally in cell death.

大多数的抗菌胜肽在水溶液中是呈现松散的结构，但和目标微生物作用时会褶叠形成双性螺旋的结构并插入其膜内，导致破坏膜内外的电位及离子梯度，造成细胞的泄漏，最后导致细胞死亡。

At present website of my briny helix alga is insisting to update management to fall, return terrestrial the right way eventually.

目前我的海水螺旋藻网站在坚持更新管理下，终于返回人间正道了。

The familiar eyeball shape of the Helix Nebula shows only two dimensions of this complex celestial body.

熟悉的眼球形状的螺旋星云显示只有两个层面对这一复杂的天体。

In the first part, twelve peptides, including eight conservative amino acid residues in the amino acid sequence of hydrophilic S helix of AOX. were synthesized by solid-phase method. The polypeptide was coupled to a -chymotrypsinogen, and the antibodies were obtained through immunizing rabbit by injecting this complex.

第一部分，我们按照交替氧化酶(Alternative Oxidase，AOX)位于线粒体内膜外侧亲水区S螺旋的氨基酸序列，用固相法合成由12个氨基酸残基组成的多肽，将此多肽与α-牛胰凝乳蛋白酶原A相连，用作半抗原，免疫家兔制备人工合成12肽的抗体。

We have also presented the ω-circulant boundary condition and compared it with the helix boundary condition. Furthermore, we can also get another new boundary condition: the mixed boundary condition.

由此我们提出了ω循环型边界条件并将其与普通循环型及螺旋型边界条件作了分析和比较；进一步地，得到了一种新的边界条件：混合型边界条件。

The circular helix is a regular curve on the surface of a circular cylinder.

这个圆柱螺旋线是在圆柱体表面的一个正则曲线。

In the paper, the math model of the fitting machining benchmark curve of stone slice has been given, which used on the handrail of eddied ladder ,and circular helix has been used to be a fitting curve.

本文给出了旋转扶梯石材贴片的加工基准曲线拟合的数学模型，以空间螺旋线作为拟合曲线，为石材数控线切割机提供了理论基础，解决了石材加工行业中的实际问题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。