中部上的

Leaves directed forward and closely appressed on upper side of branchlets, spreading and almost pectinately arranged on lower side, not parallel sided; seed scales at middle of cones obovate-oblong or rhombic, distal margin usually recurved, sometimes elo

向前指引的叶和在上面边的小枝上接近贴伏，平展和几乎pectinately排列在下部边，不与被站在一起相似；种鳞孢子叶球倒卵状长圆形或菱形，下弯的上部边缘通常，有时elo的在中部 15 Picea brachytyla 麦吊云杉

The results show that: from the subcircuit that is furthest to the heat source to the nearest one,the stability of DRS becomes gradually worse;the stability of RRS is symmetrical,with the subcircuit in the middle of the pipe-network having the worst stability,while,the nearer to the two ends,the better the stability of the subcircuits is.

结果表明，异程系统从离热源最近的支路到最远支路，稳定性依次变差；同程系统的稳定性具有对称性，网路中部的支路稳定性最差，越往两端，支路的稳定性越好；从总体上讲，同程系统的稳定性差于异程系统。

Corolla zygomorphic, ventricose funnelform, tube narrow at base, throat wide; limb oblique, ca. 2-lipped, upper lip 2-lobed or entire, lower lip 3-lobed with middle lobe larger.

左右对称的花冠，一侧臌，筒部狭窄在基部，喉宽；大的偏斜，约二唇形的瓣片，上唇2裂的或全缘，下唇3浅裂的具中部裂片。

The analysis of correlation indicated that tobacco breeding with higher potassium content has the characteristics of higher stalk height, wider stalk circumference, longer leaf and more leaf number comparatively. The correlations between potassium content and nicotin among top, middle and bottom tobacco leaves were all negative. The correlation among potassium content and malondialdehyde,superoxide dismutase, conductance ratio; and protein, solubility sugar, chlorophyl and free water/bondage water were all attained marked level, however, the essence of correlation was different: the former was negative but the latter was positive. 4.The analysis of heterosis demonstrated there were different degree heterosis in the potassium content of tobacco leaf and other correlated characters, including agriculture, physiology and biochemistry.

相关分析表明，烟叶钾含量性状与株高、茎围和最大叶长的相关性达到了显著和极显著的水平，与叶数的相关虽未达到显著水平，但相关程度相对较高；烟叶钾含量与烟碱在上、中、下三部位叶之间均呈负相关关系，中部叶烟碱与烟叶钾含量的相关达到了极显著水平；烟叶钾含量性状与丙二醛、SOD和电导率以及与蛋白质、可溶性糖、叶绿素和自由水/束缚水之间的相关性均未达显著水平，但相关性质不同，烟叶钾含量性状与前三者之间表现负相关关系，而与后四者之间呈正相关关系；4。

The igneous carbonatites generated in the first and the second periods are distributed in northern and southern margins of the North China Craton, and the third one is recognized in the eastern and central parts of this craton.

在空间上，前两个拉张阶段形成的火成碳酸岩分布在华北克拉通的北缘和南缘；后一个拉张阶段形成的火成碳酸岩分布在克拉通的中部和东部。

On the basis of a la rge number of previous research,geochemical characteristics and in dexes of mixed origin natural gases f rom Ordovician weathered crust gas r eservoirs in Central Gas Field in the Ordos Basin are systematically studied.

在前人大量研究的基础上，系统研究了该气田天然气混源的地球化学特征与标志，并利用多指标综合评价了气藏的气源。研究结果表明，鄂尔多斯盆地中部气田奥陶系风化壳天然气具有高—过成熟干气的组分和同位素特征。

The spectacular red fox can be found in North America from the Arctic tundra to the mid-central and eastern U.S. It is the most widespread carnivore on earth.

美丽的红狐狸是世界上分怖最广的肉食动物，它们的分怖范围遍及北美洲，由北极冻原是一路延伸到美国的中部及东部。

Electric potential waveshapes of tower body and crossarms were presented by EMTP, also voltage waveshape between upper or lower crossarms and any given phase conductors.

分析结果表明，在高杆塔情况下，降低冲击接地电阻对耐雷性能的改善效果不大；在中横担外侧加设辐合地线和上横担中部增设避雷线以及适当调整导线与上下横担之间空气间隙的距离可有效的改善输电线路的耐雷性能；在条件允许的情况下，建议降低杆塔高度。

Tall annual marsh elder common in moist rich soil is central North America that can cause contact dermatitis; produces much pollen that is a major cause of hay fever .

一种一年生的、高大的沼生接骨木，它常见于北美中部的潮湿沃土上，造成接触性皮炎；产生许多花粉，是引起花粉热的主要原因。

Trebizond, located in northeast Asia Minor, had a definitely eastern "orientation" and played little role in the politics of the central area.

特拉比仲德座落在小亚细亚的东北部，具有明显的东方的&东方化&特征，而且在中部地区政治上扮演很小的角色。

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。