三倍

The basis function of the coinjection of Nitrogen and steam is increasing the displacement volume and supply the displacement energy on the basis of Nitrogen, the result of the numerical simulation showed that, after the coinjection of Nitrogen and steam (the optional aqueous Nitrogen ratio was 1: 20～1: 50), the theamal readius increased from 30m to 55m more or less, the recovery ratio increased by 5～10％. The production effect of the high cycles steam stimulation will be improved and the pattern infill will be avoided and the economic results will be improved. 4. The poor result of steamflood is another problem. On the basis of the analysis of the foamer mechanism in the propayation, movement and stabilization, this paper showed that the main meachanism of the increasing recovery of the Nitrogen foam and steamflood was the increasing displacement factor and oil displacement efficiency.

三针对蒸汽吞吐加热半径有限（一般30m左右）而蒸汽吞吐轮次已高达5轮以上的具体情况，将氮气与蒸汽混合（套管环空中注氮气，油管中注蒸汽）进行吞吐可增加加热半径1～2倍以上；在对原油流变性研究基础上，对氮气蒸汽原油体系状态进行了分析，指出了氮气在油藏中基本上是以气相方式存在；热氮混合吞吐的基本作用为扩大波及体积和提供驱油能量；在此基础上所进行的热氮混注数值模拟研究表明：蒸汽中加入氮气后（最佳汽氮比为1：20～1：50），加热半径从30m增至55m左右，采收率可提高5～10％以上，大大改善了高轮次蒸汽吞吐的生产效果，可避免大规模井网加密，提高了经济效益。

The merit of the invention are: 1 adopting free curved surface imaging method , three part reflection type Zernike polynomial free curved surface forms short focal distance bigger, relative apertures bigger fields of view angle imaging , rectifying optical aberration much better and its structure is simple; 2 adopting the reflection structure without optical lens, has removed the effect of various chromatic aberration , guarantee the imaging articulation; 3 adopt the design of short focal distance big fields of view angle, focal distance 8 - 15 mm, field of view angles 100 -135 degree, having 120 times multiplications under 250 mm imaging distance, having ultra-thin characteristic property; 4 adopting big relative apertures design ,the relative aperture is 2.0-2.4, having improved the illuminance of flat surface; 5 adopting image space telecentric imaging method , ensures that the image surface irradiance is homogeneous.

本发明的优点是：1采用自由曲面成像方法，三片反射式Zernike多项式自由曲面形成短焦距大相对孔径大视场角成像，更好地校正像差，结构简单；2采用无透镜形式的反射式结构，消除了各种色差影响，保证成像清晰度；3采用短焦距大视场角设计，焦距8～15mm，具有100～135度的视场角，在250mm成像距离下有120倍的放大倍数，具有超薄特性；4采用大相对孔径设计，相对孔径为2.0～2.4，提高像平面上的光照度；5采用像方远心成像方法，保证像面辐照度均匀。

The two Fraunhofer lines at 688nm and 760nm are obvious in the radiance spectra by ASD FieldSpec Pro NIR spectrometer,which largely overlap the chlorophyll fluorescence emission spectrum of leaves.

第三，研究并分析了夫琅和费暗线方法计算的688nm和760nm波段的荧光特性，结果表明该方法计算的荧光是可靠的，它与光合有效辐射关系密切，复相关系数达到了0.9；冬小麦冠层荧光光谱在760nm和688nm波段的荧光大小基本相等，而地锦冠层荧光光谱在688nm波段的荧光强度是760nm的3倍左右，表明荧光光谱能够更加敏感地反映植被物种或生理生化状况的差别。

Great Salt Lake, which is about four to five times as salty as the ocean, is actually fed by fresh-water streams.

大盐湖的水大概比海水还咸三四倍，但是它的支流都是淡水。

Mercury is slightly smaller in diameter than the moons Ganymede and Titan but more than twice as massive.

汞是略小，直径比卫星木卫三和土卫六的两倍以上，但作为大规模。

The first total synthesis of 3, 7, 11-trimethyl-10-oxododecanoic acid 14,a new sesquiterpene isolated from Caulerpa recemosa have been completedthrough eight steps starting from geraniol in a 18.5% overall yield.

以香叶醇为原料，经八步反应首次完成了倍半萜3，7，11-三甲基- 10-氧代-十二碳酸14天然产物的全合成，并对关键中间体24进行官能团改造，便利地合成了全反式法呢醇12。

All three are JPEG files - a low-compression mode, a medium-compression mode and a high-compression mode.

三种模式分别为：低分辨率模式、中分辨率模式、高分辨率模式，最佳模式的图片尺寸是基本模式的4倍。

It is 50 times higher than it was just three years ago.

这是50倍，这是三年前。

And 17. 6% respectively when increasing furnace arch height 10 times original height and adopting furnace arch stmcture of inequilateral depth and double fumace arch structure.

研究表明，当折焰角高度增加为原高度的10倍、采用左右不等深度折焰角和双折焰角三种结构时，炉膛出口残余旋转明显减小，末级再热器入口截面最大速度不均匀性系数M〓可分别减小30.7％、19.3％和17.6％。

GJ1214 is a star five times smaller than our Sun and three hundred times less bright. Located only 40 light-years away from us, it is found to be surrounded by a super-Earth planet whose interior is likely mostly made of water ice.

恒星GJ1214，是我们的太阳的五分之一大小，而且本质上讲，亮度也暗三百倍，距离地球约40光年，被一颗表面很有可能大部分由水冰构成的行星绕转。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。