为探索...

This article take the cast-in-place reinforced concrete spatial core beamless roof characteristic as a foundation, analyzes its basic mechanics performance, explores the reasonable computation pattern and the design method, to carries on the design, the safeguard structure safety handling correctly, further promotes its application, has the vital significance.

本文以现浇钢筋混凝土空心板无梁楼盖的特点为基础，分析它的基本力学性能，探索合理的计算模式和设计方法，对正确进行设计、保障结构的安全使用、进一步推广它的应用，有重要意义。

This work dealt with formation mechanism of heterosis of cocoon quality characters bymeans of physiological,biochemical and biometrical techniques for the purpose to providetheory guidance for adequate and predicatable application of heterosis.

本研究用生理生化及生物数学的分析方法，探索家蚕茧质性状杂种优势的产生机理，以期为生产上合理地、有预见地利用杂种优势提供理论指导。

All of these had important meaning of finding new Nucleic Acid probe and anti-cancer medicine.In chapter 1,the basic properties of DNA and bipyridyl Complexes are introduced.

对理解联吡啶类金属配合物与DNA的作用机制和键合能力，为设计寻找新型的核酸结构探针及抗肿瘤药物进行了有意义的探索。

This theory on superconductivity might guide the exploration of new bismuthate superconductors.

此理论的提出为在该体电热管系中探索新超导材料提供了有价值的参考。

The effect of Zea mays and Bromus riparius on soil and water loss were studied,the experiment was conducted to plant crop and grass in runoff-plots on the 15 degree slope naturally,the bare slop is CK,then the runoff and soil erosion amount and the biological characteristics of corn and meadow bromes termly were measured,and difference of soil and water loss prevention effect on the slop land were determined.The results showed that soil and water loss became less after both corn and meadow brome planting.And the leaf area and the coverage of meadow brome higher than corn,which was benefit for less soil and water loss at the rain season early.Meanwhile,roots of corn and meadow brome mainly distributed in 0-10 cm soil layer,and the root biomass of meadow brome was 2.88 times than that of corn.

试验在自然降雨条件下，在15°坡地设置作物与牧草径流试验小区，以裸地为对照，在每次降雨之后用全深剖面采样器取样，测量其径流量和土壤侵蚀量，定期测定玉米和草地雀麦的生物学特性，研究玉米与草地雀麦生物学特性变化及其坡地水土流失防治效果的差异，探索植物种植对坡地水土流失的主要影响因素，结果表明：种植玉米与草地雀麦，对坡地水土流失均有一定防治作用，但是，与玉米相比，草地雀麦的叶面积指数和覆盖度可在雨季前达到较高水平，有利于早期坡地水土流失防治。

In order to select a kind of eminent grass which is adaptable to the northern China, the present thesis studies ten kinds of grasses from Gramineae, Bromus biebersteinii,Bromus inermis,Festuca arundinacea ,Festuca rubra,Dactylis glomerata ,Phleum pratense,Agropyron desertorum,Agropyron smithii,Elytrigia elongate and Phalaris arundinacea,and also explores the physiological aspects of their drought resistance, cold tolerance and barren resistance. The drought resistance experiment was conducted to study 10 grasses under water stress during seedling stage by simulating indoor drought environment.

为了能选适应我国北方地区的抗旱、耐寒、耐贫瘠特性的优良牧草，本研究以草地雀麦、无芒雀麦、苇状羊茅、紫羊茅、沙生冰草、蓝茎冰草、长穗偃麦草、猫尾草、鸭茅、草芦为材料，在抗旱、耐寒和耐贫瘠性特性三方面的生理方面进行了探索研究。

The discovery of large oil reserves in the kingdom of Bunyoro (discovered oil reserves are estimated at 2bn barrels, with less than one-third of the oil region explored) raised the spectre of further ethnic unrest in August, as representatives called for the return of land expropriated under colonial rule and the reservation of political positions.

八月份布尼奥罗王国巨大的石油储量（所发现的石油储量估计为20亿桶，仅少于石油地区已经探索到的石油储量的三分之一）的发现助长了进一步的部族骚乱，布尼奥罗王国是要求归还在殖民地统治下被剥夺的土地所有权和保留其政治统治地位的代表。

To explore their catalytical capability, the esterification of phenyl formate and 1-butanol was chosen. It is found that the esterification yield exceeds 80%, which demonstrates the heteropoly acid has higher catalytic activity.

为了探索所得杂多酸的催化性能，考察了H_4PMo_(11)VO_(40)对苯甲酸和正丁醇酯化反应的催化效果，发现在最佳条件下酯收率达到80％多，证明其为一种较好的酸催化剂。

The apical buds of Celosia cristata were used as the explants for the rapid propagation to compare the mutagenic effects treated with colchicines at different concentrations and time duration in tissue culture.

以鸡冠花顶芽为外植体，研究其离体快繁程序并在无菌体繁殖条件下探索了秋水仙素溶液不同浓度和时间处理对鸡冠花的诱变效应。

There are several characters in our researches:(1) we study the relationship between karyotype polymorphism and sex chromosome in Elaphodus Cephalophus which only lives in China, and explore the mechanism of its sex chromosome evolution.

研究特色主要体现在：一、以我国特有的动物毛冠鹿为材料，在染色体和DNA水平上研究毛冠鹿核型多态与性染色体关系，探索毛冠鹿性染色体发生和演变的机制。

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