The hydrogen bonds which stabilize the collagen helix must also be broken.
稳定胶原螺旋的氢键也必须要被破坏。
Maryland-based Tilley warns against using Hedera helix.
总部位于马里兰州的 Tilley警告不要使用常青藤。
Maryland-based Tilley warns against using English ivy (hedera helix).
马里兰的 Tilley提醒不要栽植英国常春藤。
The structures are made from bundles of double-helix DNA strands.
这些结构是由一束束双螺旋DNA链构成。
They created the first double helix model of DNA in 1953. Photograph: ap.
他们在1953年构建了第一个DNA双螺旋结构。
Normal, double-helix DNA is spiral , like a loosely coiled spring.
正常的双螺旋DNA是螺旋形的，像一根松松地卷曲的弹簧。
As soon as Franklin saw the model - a triple helix - she knew it was wrong.
富兰克林一看到这个三螺旋模型就认出来了，而且她已经知道这个模型是错误的。
Examples include the double helix in biology, and the fundamental equations of physics.
最经典的例子莫过于生物学中的双螺旋结构和物理学中的基本方程。
The DNA molecule is a double helix, resembling a ladder that's been twisted along its length.
DNA（脱氧核糖核酸）的分子是一种双螺旋结构，酷似一架沿纵向扭曲的梯子。
On the basis of the study of the basket and helix scraper, we have improved their design.
本论文在对筛篮和螺旋刮刀进行研究的基础上，对筛篮和螺旋刮刀进行改进设计。
From the STMimages, we could see clearly the helix pitch and helix diameter of helix structure.
由STM图象中我们能清晰地观察到螺旋结构的螺距与螺径。
Structurally, DNA is composed of two strands that intertwine to form a spring-like structure called the double helix.
从结构上讲，DNA是由两条链相互缠绕构成弹簧状结构称为双螺旋。
This paper describes the measuring principle, construction and results of the helix standard system for testing gears.
本文介绍齿轮螺旋线标准装置的测量原理、结构及结果。
We make great efforts to provide helix tools with complete specifications, excellent qualities and reasonable prices.
以提供规格齐全，品质优良，价格合理的旋转刃具而不懈努力！
On the basis of helix theory, the rotatory direction can be predicted precisely and the optical rotation can be calculated, too.
利用螺旋理论的规律可以准确预测其旋光方向，也可以计算其旋光度。
RNA molecules form double stranded helices, just as do DNA molecules, by Watson Crick pairing of nucleotides on the two complementary strands of the helix.
RNA分子能像DNA分子那样形成双链螺旋，通过沃森·克里克配对，两个螺旋的核苷链互补。
The gear involute master and helix master are measurement standards and usually used to calibrate the involute and helix parameters of gear equipments.
齿轮渐开线样板和螺旋线样板是齿轮参数的标准计量器具，分别用于齿轮仪器渐开线、螺旋线参数的校准。
The resulting machining marks are, therefore, a helix having a very small pitch, which is equal to the feed. Consequently, the machined surface is always cylindrical.
所以，由此产生的机加工痕迹是一条具有很小节距的螺旋线，该节距等于进给。因此机加工表面始终是圆柱形的。
The firstthree positions were filled by medical inventions or discoveries,the X-ray machine being followed by the discoveries of penicillinand the DNA double helix structure。
排在榜单三甲位置的发明都是医学领域的重大发明或发现。紧随X光机之后的是盘尼西林(青霉素)的发明，以及DNA双螺旋结构的发现。
He'd also provided Watson, without Franklin's knowledge, with her key photograph, which showed — for the first time — the double-helix shape that underlies the structure of DNA.
他并且背着弗兰克林，把她拍摄的关键照片提供给沃森，这张照片表明——第一次表明——构成DNA结构的是双螺旋状态。
The construction practice indicated that the blasting efficiency in drift was improved and good economic benefits were obtained by the adoption of single helix cutting mode.
实践表明，采用单螺旋掏槽方式提高了平巷掘进爆破效率，取得了良好的经济效益。
Whether we really understand DNA is debatable, but Francis Crick and James D. Watson published the first of many papers describing the double helix structure on this day in 1953.
我们是否真正了解了DNA仍值得商榷，但1953年的这一天，弗朗西斯·克里克(Francis Crick)和詹姆斯·d·沃森发表了系列论文的第一篇，阐述了DNA的双螺旋结构。
According to the new national gear standard, three deviation-measuring items must be included in the checkout of single gear: profile deviation, helix deviation and pitch deviation.
按照新的国家齿轮标准规定，对于单个齿轮必须检验三个偏差项目：齿廓偏差、螺旋线偏差和齿距偏差。
The relationship between configuration and conformation of natural amino-acids and their rotatory direction is specifically analysed by applying the rule of helix theory proposed by author.
利用螺旋理论，具体分析了天然氨基酸的构型、构象和其旋光方向间的关系。
The invention provides an automatic double helix turning and setting device of side row stand seat with the advantages of simple structure, high transmission accuracy, and low failure rate.
本发明提供一种结构简单、传动精度高、故障率低的双螺旋副整排看台座椅自动翻放装置。
Maryland-based Tilley warns against using English ivy (Hedera helix), which adheres tenaciously and is aggressive enough to move beyond its support structure and enter a building through windows.
马里兰的Tilley提醒不要栽植英国常春藤（洋常春藤），它会顽强附在支撑结构上并凶猛地越过支撑结构从窗户进入到建筑物内。
Maryland-based Tilley warns against using English ivy (Hedera helix), which adheres tenaciously and is aggressive enough to move beyond its support structure and enter a building through windows.
马里兰的Tilley提醒不要栽植英国常春藤（洋常春藤），它会顽强附在支撑结构上并凶猛地越过支撑结构从窗户进入到建筑物内。
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