高环和低环具有相反的电荷，这样的特性可以使其像拉绳子的两只手一样交替地拉住DNA。
The upper and lower rings have opposite charges, which allow the motor to contract and release, alternately tugging at the DNA like a ring of hands pulling on a rope.
她不知道在怀孕期他是处在多环芳烃含量高还是低的环境中的。
She does not know whether her exposure to PAHs during the pregnancy was classified as high or low.
总共有140名儿童被分为多环芳烃的高接触者。
A total of 140 children were classified as having high PAH exposure.
在艾滋病毒传播率高、但男性包皮环切率低的普遍流行环境下，这是一项重要的干预措施。
This is a key intervention in generalized epidemics with high HIV prevalence and low male circumcision rates.
达拉斯这边，巴里亚这个只有6尺高的小个子已经俨然成为球队的关键一环。
For Dallas, the diminutive J. J. Barea, who is 6-feet, has arisen as a key cog.
“星环本身就让人兴奋，是很值得研究的事物，因为它的星体分布的密度非常高。”美国宇航局的斯皮策科学中心天文学家KartikSheth在记者会上说。
"The ring itself is a fascinating object worthy of study because it is forming stars at a very high rate," Kartik Sheth, an astronomer at NASA's Spitzer Science Center, said in a press release.
在克拉科夫，女人们所处的环境多环芳烃含量比纽约的高8倍。
In Krakow, the women on average were exposed to eight times higher concentrations of PAHs than the women in New York City.
研究将对干细胞移植以及每月一次给予患者高剂量环磷酰胺两种疗法的利益进行比较。
The study will compare the benefits of the stem cell transplant with giving patients just monthly doses, but high ones, of Cytoxan.
可选用红霉素或四环素治疗，但死亡率仍高(占20%)。
Erythromycin or tetracycline are the antibiotics of choice but the mortality remains high (20%).
他的目光越过哈尔茜博士投向中间的裂缝。环在这里更快的变平。岩壁只有八分之一米高而且更明显的收缩着。
He looked past Dr. Halsey to the central rift. The rings here were flattening fastest. The ledges were only an eighth of a meter high and visibly contracting.
我厂主要生产各种高、中、低压法兰，环件、锻件、齿轮及异型法兰。
I plant mainly produces all kinds of high, medium, low flange, ring, forging, gear and special flange.
还不错，这个星星的外形辨识度高，很不寻常，很好地把五环包含在内，和环形的字体搭配也不错。看起来很清新。
Not bad. The star form is distinctive and unusual. It contains the rings effectively and plays well against the circle of typography. It has a fresh look to it.
自捻纺纱与环锭纺纱相比，成本较低，生产率高，而且节省人工。
Self - twist spinning produces yarns more cheaply than ring spinning and considerably faster with less labor.
由于内环路仍未建成且由于高成本和拆除已有建筑的高难度而道路标准较低，大部分区内交通不得不利用二环路完成。
As the Inner Ring road is still incomplete and of low standard due to the high costs and difficulty of demolition of existing housing, most inter-district traffic has to use the Second Ring road.
环氧浇注干式配电变压器高低压线圈都由环氧树脂浇注密封， 所采用的环氧树脂性能好，抗裂， 耐高温，机械强度高，寿命长。
Epoxy cast dry-type distribution transformer high-voltage coil sealed by epoxy resin casting, using epoxy resin performance, cracking, high temperature, high mechanical strength, long life.
螺纹锁紧环换热器具有密封性能可靠，拆装方便，换热面积的利用率高，结构紧凑，占地面积小等特点。
The breech lock closure type heat exchanger is characterized by reliable sealing performance, easy dismantling and assembling, high utilization ratio of heat exchange area and small grounding.
多重V形环填料，组合动负载，维护填料压缩，适用于使用频率高，环境严酷的应用场合。
Multiple V-ring packing, combined with live loading, maintains packing compression under high-cycle and severe service applications.
本发明含唑环半芳香聚酰胺具有易加工和耐热温度高的优点。
The semi-aromatic polyamide containing oxazole ring of the invention has the advantages of easy processing and high heat-resistant temperature.
具有高含量的C27甾烷、规则甾烷、4-甲基甾烷、长链三环萜烷，说明它们母质主要为菌藻类；
High amounts of C27 steranes, regular steranes, 4-methyl steranes, long chain tricyclic terpanes for the western Qaidam oils indicate that the dominant organic matter source is algal material.
然后，根据试验结果得到的大量数据，经分析找出节点环板的高应力区及其大致的应力分布情况。
Subsequently, the high stress areas and the stress distribution of the joint have been found out by handling and analyzing the large quantity data.
高带宽与100%的通道可用性相结合将使在令牌环网环境中处理这些类型的应用得以可行。
The combination of high bandwidth and 100% channel availability will make it feasible to handle these types of applications in a token-ring environment.
油基环空保护液是非腐蚀性的，但单位成本高、环境污染严重，不能广泛应用。
Oil base annulus protection fluid is not corrosive, however, its high cost and environment pollution restricts its universal use.
本文对高含盐量环氧丙烷皂化废水生化处理适用的流程及最佳运行条件进行了研究。
Biological treatment process applicable to epoxy propane saponification wastewater with high salt content and optimum operation condition are studied in this paper.
计算结果表明，该方法不仅运算简捷、精度高、适用性强，而且为分析更为复杂的环扇板的振动问题提供可靠的基础。
The results obtained not only reveal its briefness, high precision, and its extensiveness but also provide a reliable premise for the vibration analysis of more complex annular sector plates.
本文研究了平面多项式向量场的全局与局部分叉，旨在研究高次平面非线性动力系统多极限环的存在性以及极限环的个数及其相对位置关系；
The main aim of this dissertation is to study the exist of limit cycles of plane nonlinear dynamic system of high degree and the number and the configurations of limit cycles.
为了实现高速度、高加速度和高精度伺服系统的设计，系统的位置环采用智能PID控制。
Then, the paper analyzes a kind of intelligence PID control method and design the intelligence PID controller for the servo system.
油气由高势区向低势区呈“离心”式运移，这正是控制油气呈环、带状聚集与分布的区域动力学条件。
Oil migrated from higher potential belts to lower ones in "centrifugal flow", which was the regional dynamic condition of controlling petroleum accumulation and distribution.
从而以高收率得到带各种取代基的环丙烷。
从而以高收率得到带各种取代基的环丙烷。
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