向性的

In the thesis, two constructible definitions for DAG are put forward to make it intuitive and operable.

本文提出了有向无回路图的两种构造性定义，使DAG直观化、可操作化。

OBJECTIVE: To investigate the directional differentiation of BMSCs into hepatocytes with alcohol-hepatocirrhosis patient serum.

目的：探讨在酒精性肝硬化患者血清诱导条件下，人骨髓间充质干细胞向肝细胞样细胞的定向分化情况。

Japan's reflex response has been to draw closer to the US.

日本对此的反射性反应，迄今一直是向美国靠拢。

S. It is characteristic of fuzziness; exocentric differentials based on demands; deviation from endocentric unity; anti-rationality etc.

模糊性；反对中心、需求差异性；向整体性，统一性开战；反对理性等等，都是后现代主义的特征。

The product meets the standard request of "Cementitious grout"(JC/T986—2005), and make a comprehensive research on the performance of grouting material from the following aspects: workability, strength, vertical expansivity, and bond force.

产品符合《水泥基灌浆材料》（JC/T986—2005）标准要求，并从工作性、强度、竖向膨胀率、钢筋握裹强度等方面对该灌浆材料的性能进行了较全面研究。

Activated sludge wastewater is continuous links into the air, After a certain period of time after aerobic microorganisms breeding formed from the sludge flocculate.

活性污泥法是向废水中连续通入空气，经一定时间后因好氧性微生物繁殖而形成的污泥状絮凝物。

Based on the analysis for these characteristics and vertical evolution、sedimentary process, it is raised that Nanduan formation is a set of proximal wide-ranging-happening (no-fan model) grain flow、turbidite and shelf sediments in the wave-control delta front slop and deep shelf environment, and is not abyssal flysch suite.

在对这些特征及垂向演化、沉积机理分析基础上，提出南段组为一套浪控三角洲前缘斜坡至深陆棚环境中的近源片泛性颗粒流、浊流及正常陆棚沉积，并非深海复理石建造。

With mounting sexual excitement, the glans of the clitoris protrudes more and more from under its hood.

随着高涨的性兴奋，阴蒂头从其包皮里向外越来越突出。

RESULTS: The imaging features of CBT were masses located at the bifurcation of the carotid artery, with abundant blood supply in the tumor, the internal and external carotid arteries shifted, the bifurcation of the carotid artery increased like goldcup in DSA. The imaging features of the neurilemmoma were masses located behind the bifurcation of the carotid artery, and the carotid bifurcation was normal, no blood supply in the tumor, but carotid arteries shifted.

结果：颈动脉体瘤的CDFI和DSA特征为：颈总动脉分权处单发性肿块，并与其紧密相连，瘤体内血流极为丰富，瘤体使颈外动脉向前内移位、颈内动脉向后外移位，颈内、外动脉分权角度增大明显，DSA呈高脚杯状改变；神经鞘瘤紧邻颈动脉，颈总动脉分权处角度无改变，瘤体内血流信号不丰富，瘤体使颈动脉向前、外移位。

Vegetation ecotype tend to be xerophyte and even hyper-xerophyte and finally replaced by annual plant. Community structure and species diversity also decrease as the ecological environment worsen, In this process, the height, coverage and biomass decreases by 56.6%、 80.8% and 74.2% respectively compared to steppe, and the indices of species richness, diversity and evenness decrease by 76.4%、 56.7% and 32.0%, but β diversity indices increase by 14.6 times, especially the decease of species gregariousness and the breadth and overlay of species Niche shows that grassland tend to be more sandy and vegetation retrogression succession take place.

其中，植被生态型逐渐由中旱生向旱生、超旱生过渡，并最终被一年生植被替代；群落结构及多样性呈明显递减规律，到严重沙化阶段，草群高度、盖度、生物量与典型草原相比，下降幅度分别达到56.6%、80.8%和74.2%；物种丰富度、多样性及均匀性分别降低76.4%、56.7%和32.0%；而群落β多样性增长14.6倍，特别是多年生物种群聚度降低和生态位宽度、生态位重叠值的下降，表明草地沙化，植被发生逆行演替。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。