双特征的

Because of the rapid development of the wireless communication technology, the design and research of the integrated circuits in the related field has gained more and more attention in recent years. And with the advance of the IC process technology, the cutoff frequency of MOS devices can reach several giga herz or more. It is a trend that CMOS process will replace the III-V compound process such as gallium arsenide or silicon bipolar process which were dominant in the fields of radio frequency and microwave.

近年来，由于无线通信技术的飞速发展，相关领域的集成电路的设计研究也受到越来越多的关注；同时由于工艺技术的不断进步，MOS器件的特征频率也可以达到几个GHz或更高的水平，原来在射频、微波领域占主导地位的三五族化合物半导体工艺如砷化镓及硅双极型工艺也有逐渐被CMOS工艺所取代的趋势。

Assessment of calcaneum bone quality and quantity using quantitative ultrasound can be an effective method in screening and preventing of osteoporosis in aged cohort.

近年来发展起来的定量超声法(Quantitative ultrasound，QUS)利用超声对物质密度、结构及材料的特征表现来评价骨的质量，已被证实与双能X线骨密度测定(Dual一cnergy X一ray absorptiometry，DXA)具有良好的相关性，因而成为一种适宜于在大规模人群中筛选骨质疏松高危患者的经济、方便的检测方式l，幻。

In view of practical problem during Sulige gas field development, this paper complete follow study content. Study material balance theory of two district compound gas reservoir. Carry out stress sensitivity experiment on matrix rock and labor created fracture core from Sulige gas field with America Core Company high pressure high temperature flow experimental instrument to study stress sensitivity change rule of different permeability matrix rock and created fracture core at the condition of time and again switch on and off well and different drawdown pressure. Carry out depletion experiment on matrix rock of different permeability serial combination with different kinds of allocation, using double core clamper serial connected experimental apparatus, to study gas well production performance of bi-zonal compound low permeability reservoir during low pressure production stage. At the basis of experimental study, establish single well simulation model to analyze development index infection caused by stress sensibility and production performance infection rule caused by inner formation and outer formation of bi-zonal compound gas reservoir permeability variation while considering stress sensitivity.

针对苏里格低渗气田开发中存在的实际问题，完成以下研究内容；研究了两区复合气藏物质平衡原理；利用美国岩芯公司高温高压流动实验仪，对取自苏里格气田基质岩芯和人工造缝岩芯进行应力敏感实验，研究不同渗透率基质岩芯和造缝岩芯在多次开关井和不同生产压差条件下的应力敏感变化规律；采用双岩芯夹持器串联实验装置，对不同渗透率串联组合的基质岩芯进行各种配产条件下的衰竭实验，研究两区复合的低渗储层气井在低压生产阶段的生产动态特征；在实验研究的基础上，建立单井模拟模型分析储层应力敏感性和非均质性对开发指标的影响，研究考虑应力敏感时两区复合气藏储层中内区和外区渗透率变化对开发动态的影响规律。

The chemical composition, crystal morphology, fluid inclusions and thermoluminescent characteristics of non-metallic mineral s such as quartz and carbonate from the Jindoushan gold deposit were studied in detail.

对产于烟台金斗山金矿内的贯通性非金属矿物石英及碳酸盐类的化学成分、晶体习性、流体包裹体和天然热发光特征做了研究，结果表明，矿床的主成矿阶段的环境介质为酸性偏中性，富矿和贫矿石英的热发光曲线均为双峰型，但峰点温度、总积分强度有显著差异。

Many of today's scientific headlines — the deciphering of the dna of humans and other species, the transplanting of genes into animals and crops to change their traits, the use of gene therapy to treat disease, the dna evidence that exonerates people imprisoned unjustly — ultimately came from the double helix discovery.

许多今日科学界的热门话题，诸如人类和其他物种的dna密码破解，将基因移植到动物或植物体内以改变其生物特征，应用基因疗法治疗疾病以及依靠dna证据使被错误监禁的人恢复清白，都最终源自双螺旋分子结构的发现。

Many of today's scientific headlines—the deciphering of the DNA of humans and other species, the transplanting of genessintosanimals and crops to change their traits, the use of gene therapy to treat disease, the DNA evidence that exonerates people imprisoned unjustly—ultimately came from the double helix discovery.

许多今日科学界的热门话题，诸如人类和其他物种的DNA密码破解，将基因移植到动物或植物体内以改变其生物特征，应用基因疗法治疗疾病以及依靠DNA证据使被错误监禁的人恢复清白，都最终源自双螺旋分子结构的发现。

In her new movie,"The Proposal," Sandra Bullock , playing a Type A witch, totters around in a pair of exquisite high heels, the kind that elongate the legs and give a woman's derri re the gentle backward thrust familiar from fertility figurines.

Sandra Bullock 在她的新片《假结婚》中饰演的角色简直是个 A 型（ A 型行为(一种行为范例或行为模式，其特征是性情急躁，有高度进取心和紧迫感，易引发冠心病)）女魔头，穿着一双秀腿提臀的精致高跟鞋，屁股翘得让人想起了丰满的女性雕像，可惜高跟鞋让她有些摇摇欲坠。

It is found that these two organic dopant TGS crystals have better figures of merit than that of...

并从结构的角度出发探讨了双有机取代基对晶体生长形态和晶体性能的影响机制，提出了有机取代基分子本身的结构特征和有机取代基中的功能基团是影响TGS晶体形态和性能的两大因素。

Two models were developed, one for calculating the leakage rate of water from heat transfer tubes due to one broken double ended guillotine tube in the steam generator of LMFBR using the one dimensional method of characteristics, and anotherone for temperature, adiabatic spherical to columnar hydrogen bubble growth model in large sodium water reaction.

采用一维特征线方法建立了快堆蒸汽发生器单管发生双端断裂情况下，水从破裂传热管流出的泄漏率计算模型和钠水反应气泡从球状到柱状的变温绝热生长模型。沸腾是钠冷快堆安全分析工作中必须要考虑的一个问题，而堵流是众多导致发生沸腾原因中十分重要的一个。

The perfect CAD/CAM technology scheme for oblique tooth slotting cutter based on 3D feature modeling by SolidWorks and NC wire cutting is given,associated with ingenious application of double sine bar fixture,so the simplification of design and automation of manufacture for oblique tooth slotting cutter are realized,and the rapid response is potently guaranteed.

给出了完善的基于SolidWorks三维特征造型和数控线切割加工的斜齿梳齿刀CAD/CAM技术方案，辅以双正弦规夹具的巧妙应用，使设计简约化，制造自动化，为斜齿梳齿刀设计制造的快速响应提供了有效保证。

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