单向

The fatigue damage mechanism of unidirectional polyester reinforced rubber composites was studied with soft X－ray radiography and scanning electron microscopy under cyclic loading.

利用软X射线技术和扫描电子显微镜技术，研究了在周期载荷下单向聚酯帘线/橡胶复合材料的疲劳机理。

Afterwards,this paper presents typical station type selecting model by taking unidirectional three-stage/three-yard Marshalling station and bidirectional three-stage/six-yard Marshalling station as representation.At last,northern Xuzhou is applied to a numeral example to validate the effect of this method,which proves that station type selecting by means of comparing the total waste of wagon flow in the Marshalling station from the view of wagon flow structure is not only effective but scientific,meanwhile,this provides a scientific and effective decision-making measure for determining the scope and layout of Marshalling station.

在上述研究基础上，以单向三级三场和双向三级六场为代表，构建能力约束条件下的典型单双向系统的择优比对模型，并通过徐州北编组站进行实例验证，从中看出，从车流结构入手，根据各种车流在编组站所消耗总费用的高低来进行站型选择不仅切实有效，而且经济科学，同时，这也为全面定位编组站的规模和布局提供了一种科学有效的决策手段。

Methods: The absorption of tinidazole in small intestine and colon of rats was investigated using in situ single-pass perfusion method and the drug content was measured by HPLC. The effects of drug concentration on the intestinal absorption were investigated.

采用大鼠在体单向灌流法，利用HPLC法测定替硝唑的含量，研究替硝唑在小肠和结肠的吸收情况，并考查药物浓度对替硝唑吸收的影响。

Expressed sequence tags are short, randomly selected single-pass nucleotide sequence reads derived from cDNA libraries and represent a small part of a gene.

表达序列标签(expressed sequence tags， EST)是从随机选择的cDNA 克隆进行单向测序获得的短的cDNA序列，代表一个完整基因的一部分。

Based on the detailed analysis of existing dimension recognition methods, this paper concluded a common limitation of existing methods-"single-entry recognition", which has three distinct drawbacks. First, the only recognition entry reduces the capability to handle drawings of different qualities; second, the fixed search order for dimension elements block algorithm seeking all possible ways to find a dimension structure; third, single directional recognition of graphic elements uses no drawing context and thus can not make use of engineering knowledge.

本文分析了现有的尺寸识别方法，指出它们共有的局限性——单入口的识别过程：单一的识别入口限制了算法对不同质量图纸的适应能力；固定的元素搜索顺序阻碍了算法利用一切可能的途径寻找和识别尺寸标识结构；单向的独立于上下文的图形元素识别忽略了应用领域知识对识别过程的启发作用。

Special emphasis should be put on the parallel connection of Venturi mixer, for it can avoid the stalling disadvantage of series-wound connection of Venturi mixer, enlarge the modulating range of EGR rate enormously, and make the best of Venturi mixer.

在前文建立的性能与排放综合预测模型基础上，增加简化的EGR管路流动模型，首次将排放预测与实时EGR管路流动结合起来，进行单向阀EGR系统的性能与排放综合预测。

The ring resonator was designed and a sequence of Q switch pulses using Cr 4+∶YAG crystals of different initial transparences were observed and analyzed.

介绍了利用辅助镜的NdYAG单向环形腔，并利用Cr4＋YAG晶体作为可饱和吸收被动调Q器件。

Information dissemination has been changed from one-way to multiform, the monopoly of resources to the resource sharing,and self-opening to the system.at the same time[6], The rapid development and massive applications of network technology, such as passive optical network,and constantly appear of end-user broadband access technology,which struggling development of all over the country's two-way cable TV network transformation.

信息传播正在从单向单一形态向双向多元形态、从资源垄断向资源共享、从自成体系向开放体系转变。与此同时，无源光网等网络技术的飞速发展以及大量应用，用户终端宽带接入技术的层出不穷，都在极力促使全国各地有线电视网络双向化改造建设的发展。

Background: The stem cell is a kind of cell which can keep alive for a long term and has a few of differentiation potencies. While, the progenitor cell is a kind of cell keeping one or double ways of differentiation and the capability of its differentiation, self-renew and self-maintenance is confined.

一、研究背景干细胞是一类不分化而长期生存且保持多种分化潜能的细胞群，而祖细胞是一类分化能力、自我更新、自我维持能力受限制，只有单向或双向分化潜能且生存时间相对较短的细胞群。

The solid stainless case and screw-down crown of the Black Tip are rated to 200 meters so you can rest easy underwater, and you'll appreciate the huge numerals on the one-way ratcheting bezel when you need to quickly gauge your bottom time.

固体不锈钢案件和压下冠的黑顶的额定为200米，因此您可以安心地在水下，你会欣赏巨大的数字对单向棘轮面板时，您需要快速判断您的底部时间。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。