两凹的

The diagnostic features for the species include deep excavation on the posteroventral margin of the premaxilla, a diastema between the premaxillary and maxillary teeth, a a number of many pits and ridges on the anterolateral surface of the antorbital fossa, the posterolateral process of the parietal being long and sharply posteriorly directed, the column ar -like margin of the pterygoid process of the quadrate, the bifurcated posterior margin of the dentary, a distinctive groove posterior to the anterior carina on the medial surface of the premaxillary tooth crowns, absence of ventrolateral processes on intercentrum of t he atlas, T-shaped centrum of the first caudal in ventral view, transverse process on anterior caudals with rounded , and strongly anteroposteriorly expanded distal end, presence of two fossae separated by an oblique ridge on the lateral side of the anterior chevrons near the articular end, and pubis strongly curved psoteriorly.

这一属种的主要鉴定特征包括：前上颌骨后腹缘有一深凹、前上颌齿和上颌齿之间有一齿缺、眶前窝外表面前部有许多坑窝和脊、顶骨侧后突伸向后方、方骨的翼骨支边缘柱状、靠近前上颌齿齿冠舌面前缘有槽、环椎间椎体外腹突缺失、第一尾椎椎体腹视 T 形、前部尾椎横突远端前后向强烈扩展呈圆形、前部脉弧近端外侧面有两个被一斜脊分离的窝以及耻骨强烈向后弯曲。通过分析千禧中国鸟龙的96个骨骼学特征，发现其中21个特征支持奔龙类与鸟类的亲缘关系最近，9个特征支持奔龙类与伤齿龙类亲缘关系最近，25个特征支持奔龙类、伤齿龙类和鸟类亲缘关系较为接近。

Experiments are carried out for two types unusual eddying tube fuel perheater,and the results show the total heat transfer coefficient is 1.2～1.262 times and friction factor is 2.8～9.0 percent higher than that of smooth tubes with the same size.

对研制的两种不同结构形式的异形凹槽旋流管式燃油预热器进行了试验研究，结果表明研制的燃油预热器总传热系数要比相同尺寸光滑管式预热器提高20％～26.2％，而油侧压降仅增大2.8％～9.0％。

By using the method for positive term resolution of equations of higher degree, all non-zero real roots of a real coefficient equation of higher degreewere obtained by determiningthe abscissas of intersection points of two monotonically increasing concave functions in the first quadrant of a planar rectangular coordinate system.

用高次方程正项分解方法，将求解实系数高次方程非零实数根的问题，转化成求解两单调上升凹函数在平面直角系第一象限内交点横坐标的等价问题；给出了基于共享存储多指令流多数据流并行计算模型求解任意实系数高次方程全部实数根的大范围收敛性异步并行迭代算法，并分析了算法计算的复杂程度。

This project will certainly make up the vacancy of machine identification of the characters of intaglio printing system in the financial security field.

理论和实验结果都表明本文提出的两种方案是可行的，其中动态检测方案在一种新的专业级金融防伪设备中得到了应用，弥补了金融安全行业中机器识别凹版印刷特征的空白。

PVC is a good substrate for flexographic or rotogravure printing, two commonly used label printing techniques.

聚氯乙烯是一个很好的衬底的柔性印刷或凹版印刷，两个常用的标签印刷技术。

To this, chongqing university assumes " technique of roofing of module type zoology studies " science foundation plans city step, the sieve singled out the vegetable of zoology roofing afforest that stringy stonecrop and sunken Xie Jingtian grow two kinds in Chongqing aptly, designed at the same time can section water, store the high-tech zoology of water, catchment cultivates module.

对此，重庆大学承担的"模块式生态屋面技术探究"市级自然科学基金计划，筛选出了垂盆草和凹叶景天两种适宜在重庆种植的生态屋面绿化植物，同时设计了能够节水、储水、排水的高科技生态种植模块。

Beginning with these angles of the niche, the wall extended along the Rue Polonceau as far as a house which bore the number 49, and along the Rue Droit-Mur, where the fragment was much shorter, as far as the gloomy building which we have mentioned and whose gable it intersected, thus forming another retreating angle in the street.

和这斜壁两角相连的墙，在波隆梭街方面，一直延伸到第四十九号房屋，而在直壁街一面？？这面短多了？？直抵先头提到过的那所黑暗楼房的山尖，并和山尖构成一个新凹角。

The proposed system have two subsystems, the first is the Seeing System uses the benefits of foveated active vision to catch the interest object by positioning the optical axis of a camera on it.

以上系统有两个子系统，第一个子系统叫着看系统，该系统是利用主动视觉的中央凹视觉锐利的优势，找出感兴趣的目标，并把摄像机的光轴移向目标。

These towers differentiate and form small bulb by two ways: one way is that towers begin to differentiate from their center ; another is that towers begin to differentiate from the tops of towers or their sides and appear small sunken concaves.

这些突起进一步分化为小鳞茎是通过两种分化方式：一种是先从突起中央出现分生细胞团开始分化的；一种是先从突起的顶端或一侧出现小凹沟开始分化的。

The string may have a center serving to accommodate the drawing fingers, a nocking point to which may be added serving to fit the arrow nock as necessary, and to locate this point, one or two nock locators may be positioned, and at each end of the bowstring a loop to be placed in the string nocks of the bow when braced.

放器接触此处，上面加上与箭尾端相配的凹口点，箭尾扣在这些点上，可放置一个或两个弦上箭巢。在弦的每一端结一个环，套在弓翼两端的槽上。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了