数

Hydrogen always has valence 1, so other elements' valences equal the number of hydrogen atom s they combine with.

元素的特征价数是以该元素一个原子可结合的氢原子数或可从一化合物中置换出的氢原子数来表示。

There were very significant correlation between single plant yield and the number of compound umbels, umbellules, branches, effective branches, seed number per plant and thousand kernel weight , their correlation coefficients were 0.9040~, 0.8860~, 0.8409~, 0.8336~, 0.8659~ and 0.3925~ respectively.

单株产量与复伞形花序数、小伞形花序数、分枝数、有效分枝数、株粒数及千粒重具极显著正相关，相关系数依次为0.9040~、0.8860~、0.8409~、0.8336~、0.8659~、0.3925~。

Firstly, we analyze animate noun from three semantic features of control; secondly, we compare the power of person, organization and location in order to check out their animacy; thirdly, using VP-internal Subject Hypothesis in Transformational and Generative Grammar, we investigate Chinese, Kachin and Hani of Tibeto-Burman languages and give out the animacy hierarchy of semantic roles; fourthly, we discuss the animacy of personal pronoun, referential pronoun, proper noun, general noun and abstract noun; fifthly, topic and subjectivity pay attention to the variation of animacy of noun in the paragraph from pragmatic and cognitive points of view respectively; sixthly, we compare the numerical representation of noun in Chinese and Tibetan and other Tibeto-Burman languages. The conclusion is drawn on the relationship between number and animacy; lastly, the influence of popularity on animacy is pointed out. The fifth part includes conclusion and questions leaving behind.

第一，自控度从、、三个语义特征考察名词的生命度；第二，权力度主要通过比较指人名词与机构名词、处所词的权力度大小来检验其生命度的高低；第三，题元角色是运用转换生成语法关于动词短语内部主语的假设，考察汉语和藏缅语族的景颇语和哈尼语，对题元角色的生命度等级序列进行排序；第四，定指度和指称、专有及抽象性主要是考察人称代词、指示代词、专有名词、普通名词和抽象名词的生命度高低；第五，话题和主观性分别从语用和认知两个角度考察名词生命度在语篇中的变化情况；第六，数范畴涉及汉语和藏缅语族的藏语、独龙语、羌语、普米语、景颇语和哈尼语，主要比较它们名词表数概念的差异，总结数范畴与生命度的关系；最后，列举了通俗度对汉语名词生命度的影响。

The results showed that the order of the effects of vary traits on the yield was lodging resistance, ear height, ear yield rate, plant height, rows per ear, thousand kernel weight, growth period, ear length, ear thicks, weight per ear, kernel per row.

结果表明，湖北省玉米种植区玉米杂交种产量与主要农艺性状的关联度大小排序为抗倒性＞穗位高＞出子率＞株高＞穗行数＞千粒重＞生育期＞穗长＞穗粗＞单穗粒重＞行粒数，与产量密切相关的是品种的抗倒性、穗位高、出子率、株高、穗行数。

You have isolated a plasmid DNA that is a closed circular molecular 1050 bp in length with 5 negative supercoils.

请问这个DNA分子的连接数、螺旋数、扭曲数、以及超螺旋密度是多少？

A univariate ANOVA is executed to analyze the influencing factors of the production cost by dividing it into direct material, direct labor cost, indirect cost and total cost separately. It is found that the variables of farm scale and crop type show significant impacts in the direct labor cost and total production cost. The one-crop farming variable makes significant difference in the total production cost; whereas different planting ways differentiates the indirect cost. In addition, years of farming, farmer's age, and full-time status all make no significant difference in all aspects of production cost.

此外，将农场生产成本分为直接材料、直接人工、间接成本、总生产成本四面向进行多因子变异数分析，结果发现耕作面积、作物类型变项仅在有机农场的直接人工和总生产成本中有显著差异；有机农场是否为单一经营在总生产成本上有显著差异；不同栽培方式的有机农场仅在间接成本的高低上有显著差异；此外，而耕作年数变项因本研究有机农场耕作年数较高之样本特性影响，导致该变项对生产成本并无显著的差异；年龄、专兼业经营等变项在生产成本上高低并无显著差异。

Results show that the change trend of growth is homogeneous, but it plays a different role in the growth of seedling height, ground diameter and leaf number; that for seedling height, peat soil is the best and red loam comes the next, for ground diameter, red loam is the best and peat soil comes the next and for leaf number, peat soil is the best, and red loam with nutrient soil named "zhidele" comes the next; and that in a growth season, the law of monthly increment of seedling height and leaf number is "fast-slow-fast-slow-stop" while the monthly increment of ground diameter is relatively stable.

结果表明，4种不同基质条件下油茶生长量变化趋势基本保持一致，但对苗高、径粗、叶片数的生长影响不同，对于苗高来说，泥炭土最好，红壤土次之；对于径粗来说，以红壤土最好，泥炭土次之；对于叶片数来说，以泥炭土最好，红壤土和植得乐营养土次之。在生长期内，幼苗苗高和叶片数月增长呈现出&快－慢－快－慢－停止&的规律，而幼苗径粗增长量相对稳定。

The log10 of survivors from radiation is plotted against the radiation dosage, and the radiation D or D10, which is comparable with the thermal D value, is obtained. The D10 is defined as the amount of radiation in rads (ergs of energy per 100g of material) required reducing the microbial population by 1 log (90%).

若将照射中存活微生物数目的log10值对照射剂量进行标绘，则可求出辐照D值(即D10值)，此值与热力D值相当。D10值的意义是微生物总数减少一个对数周期(90％)所必需的照射拉德数(每100克物质得到的能量尔格数)。

The log10 of survivors from radiation is plotted against the radiationdosage, and the radiation D or D10, which is comparable with thethermal D value, is obtained. The D10 is defined as the amount ofradiation in rads (ergs of energy per 100g of material) requiredreducing the microbial population by 1 log (90%).

若将照射中存活微生物数目的log10值对照射剂量进行标绘，则可求出辐照D值(即D10值)，此值与热力D值相当。D10值的意义是微生物总数减少一个对数周期(90％)所必需的照射拉德数(每100克物质得到的能量尔格数)。

The crack and stress-strain of Chinese White Poplar were studied by the box counting method. The results showed that the cracks were obvious fractal and that the value of dimension D was determined to be between 1.2～1.5 by studying the crack propagation in the two dimensions. By comparing the crack propagation over a period of time, we found that the value of D increased as the crack increased.

运用数盒子法对裂纹发育带在二维平面内的分布进行了分形特征研究，发现木材裂纹具有明显的分形规律，分形维数为1.2～1.5；通过比较不同时间段的裂纹发育情况，发现裂纹的分形维数随着裂纹的扩展呈增加的趋势。

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。