查询词典 periods

The results show that the phenological periods of ligneous plants occurred earlier with increasing temperature in spring; on the contrary, the ligneous plant phenological periods delayed with decreasing temperature.

结果表明：平均温度上升，木本植物春季物候期提前；平均温度下降，木本植物春季物候期推迟。

The economic nature, characteristics and content of the economic entity of Saint Linage are different during different periods, and thus it has a necessary to research and analysis the economic phenomenon theoretically to find the nature and the social function of saintly linage in different periods.

门宦经济的性质、特征和内容都在不同的时期是不同的，因而对此有必要从理论上进行考察、论证和分析，以透过这种现象发现门宦经济在不同的时期的本质特征和社会功能。哲赫忍耶作为西北最大的门宦，其经济实体在清末民国时期是比较雄厚的，影响也是比较大的。

After a while it became clear that one could try to forecast magnetic intensity because long periods of quietude alternated with short periods of plenty of sharp peaks (this is called a magnetic storm).

过了一段时间，人们发现磁的强度是可以预测的，因为一段长时间的平静期和一段短时间的高峰期交替出现。

Abnormal phenomena in different periods of embryo sac development, including degeneration of megaspore, embryo sac abnormality during the periods of two to eight nucleate etc., were found in the plants with low seed setting rate.

对一些结实率偏低材料的研究，发现在胚囊发育过程的不同时期存在一些异常现象，包括功能大孢子退化，二至八核胚囊发育异常等。

The Lower/Upper Cretaceous boundary in Songliao Basin is,therefore,between the Quantou and Denglouku formations,instead of between the Quantou and Qingshankou formations.2.The dark mudstones and shales in the Member 1 of Qingshankou Formation are of high organic carbon and low diasteranes contents.Organic geochemical characters are illustrated by biomarkers of 28,30-bisnorhopane and gammacerane,and positive excursion of kerogen isotopes.It is suggested that the dark mudstones and shales in the Member 1 of Qingshankou Formation are the products of lake anoxic period.It corresponds to the oceanic anoxic event at Cenomanian-Turonian boundary in Cretaceous.3.Based on the study of biostratigraphy,chronostratigraphy,magnetostratigraphy and event stratigraphy,a correlation of the lacustrine sequence to marine standard has been proposed,i.e.,the Quantou Formation corresponds to Cenomanian stage,Qingshankou Formation correlates to Later Cenomanian-Early Turonian,Yaojia Formation to Later Turonian-Coniacian,Nenjiang Formation to Santonian-Campanian.Sifangtai and Minshui Formations to Maastrichtian. 4.Analysis of lithology,lithofacies and microfossils of Cretaceous in Songliao Basin, shows that shore and shallow lake facies yield the most abundant microfossil groups,and the predelta and deltaic distributary plain facies rich in fossils as well.In the shore and shallow lake areas during the high level periods(such as Qingshankou and Nenjiang sedimentary periods),the lacustrine biota are of high diversity and high abundance.

因此，松辽盆地上、下白垩统的界线应在泉头组的底界，即泉头组与登娄库组之间，而不是泉头组的顶界。2、青山口组一段黑色泥岩、页岩具有有机碳含量高、重排甾烷含量低，生物标志物出现28，30—双降藿烷和伽马蜡烷，干酷根碳同位素具有正向偏移等有机地球化学特征，表征为青山口组一段黑色页岩、油页岩是古湖泊缺氧事件的产物，它对应于白垩纪古海洋Cenomanian—Turonian期界线附近缺氧事件，二者具同步性。3、通过生物地层学、年代地层学、磁性地层学和事件地层学研究，认为泉头阶大体相当于Cenomanian阶，青山口阶相当于晚Cenomanian—早Turonian阶，姚家阶对应于晚Turonian—Coniacian阶，嫩江阶对应于Santonian—Campanian阶，四方台阶和明水阶相当于Maastrichtian阶。4、通过对松辽盆地上白垩统的岩性、岩相及微体化石分析，认为滨浅湖相是微体生物群最为发育的相带，其次为三角洲前缘相和三角洲分流平原相。

This paper took the paddy soil after saving-water irrigation as the object,which is from Taian town of Yangzhou city, selected microtomy to get undisturbed soil samples respectly between two periods(before irrigation and after harvest), built up the analytical technique of numerical picture system.It also set up the analysis index of macropore structure,such as the number of macropores N, the macroporosityφ,the area A, the perimeter P and so on. Meanwhile make analysis contrast about horizonal distribution among 4cm, 6cm and 8cm scanning areas, vertical differences per 2cm unit and contrast in time between different periods.

本文选取扬州市泰安镇节水灌溉后稻田土壤为研究对象，采用切片法取开灌前和收割后的原状土样，运用数字图像制备技术，获取大孔隙数目N、大孔隙度Φ、面积A、周长P等分析指标，对4cm、6cm和8cm扫描直径内大孔隙作水平向差异性分析，对2cm单位深度上作垂向差异性分析以及对两个不同时期作时间差异性分析。

This thesis takes the strenuous search for cultural identity of the Dead family in Song of Solomon as the main line, embarks on the cultural identity of blacks in different periods, connects the pursuit of identity with their history in American society, outlines a vivid historical picture of blacks from the evolution of their identity (from the enslaved black to the emancipated freedman, to the northern migrator and then the youth born in the north), further explores the efforts made by the blacks on their way to seek their national outlets and build their cultural identity in different periods, points out the advantage and disadvantage of their choice, and finally draws to the conclusion that African American should not abandon their national tradition but at the same time they must stand on American society and find a sound integrity of the two cultures.

本论文以托妮·莫里森的第三部小说《所罗门之歌》中戴德家族寻求文化身份认同的艰难历程为主线，以黑人在不同的历史时期的文化身份的选择为切入点，把黑人对身份的探寻与他们在美国社会中的历史文化联系在一起。从黑人身份的演变(从奴隶到被解放的自由人到北方移民者到出生在北方的新一代黑人青年)勾勒出一幅美国黑人百年历史的生动画面，分析在不同时期黑人为寻求民族出路和构建文化身份时所做出的艰苦卓绝地努力和探索。同时也指出了他们所选择道路的利与弊。最后的结论是：在寻求种族出路时既要立足美国现实又不能抛弃种族传统，而应该努力找到二者的最佳结合点。

The formation process of the rocks is divided for thefirst time into three cycles corresponding to J2, J3, and K1, respectively, and each cycle into early,middle, and late periods based on intruding contact relationship among different types ofgranitoids.3. A detailed study on the petrological characteristics of different cycles of theMesozoic granitoids supports classification of the rocks into three lithological associationsincluding A-type, high-K calc-alkaline, and calc-alkaline granitoids, of which the first associationbelongs to alkaline series, and the others belong to calc-alkaline series. It is shown that thelithologies change from diorite, quartz monzonite, and granodiorite to monzonitic graniteand syenogranite with periods from early to late in each cycle.4. A preliminary summarization hasbeen made on the evolution characteristics of the rocks.

首次将中生代花岗岩类划分为J2旋回、J3旋回、K1旋回等三个旋回，并依据不同岩石类型间的侵入接触关系，将每个旋回又划分为早、中、晚三期。3、在详细研究区内中生代不同时期花岗岩类岩石特征的基础上，首次将区内中生代花岗岩类划分为碱性系列碱质A型花岗岩类以及钙碱性系列高钾钙碱性花岗岩类和钙碱性花岗岩类等二个系列三种岩石组合类型，确定每个旋回从早期到晚期，岩石均具有从闪长岩、花岗闪长岩、石英二长岩-二长花岗岩-正长花岗岩演化的趋势。4、初步总结了区内中生代花岗岩类的演化特征。

The boundary condition of small scope is provided by the computation result of large scope, and the computation is also stable after two periods. The computation of temperature field begins and it is stable after six periods. The computation is conducted at three different tide levels, including spring tide, still tide and neap tide.

大范围的流场计算在两个周期后达到稳定，开始计算小范围的流场，小范围的边界条件由大范围计算结果提供，小范围的流场在计算后两个周期后达到稳定，开始计算小范围的温度场，温度场的计算在六个周期后达到稳定。

The boundary condition of small scope is provided by the computation result of large scope, and the computation is also stable after two periods. The computation of temperature field begins and it is stable after six periods. The computation is conducted at three different tide levels, including spring tide, still tideand neap tide.

大范围的流场计算在两个周期后达到稳定，开始计算小范围的流场，小范围的边界条件由大范围计算结果提供，小范围的流场在计算后两个周期后达到稳定，开始计算小范围的温度场，温度场的计算在六个周期后达到稳定。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失