材料

Of the late two years,in order to find out a kind of dental implant ing materialwhich would possess both the very good properties of biological compatibility,the chemical compatibility and the mechanical compatibility,an animal experi-mental preselection was accomplished by our research team with six kinds of im-planting material chosen from four main sorts of oral implant ing material(met-al,ceramic,high polymer and carbon),As the result of the Preselection,thematerial……bio-ceramic was chosen by ...

为了寻求生物相容性、化学相容性和力学相容性均好的种植材料，在口腔四大类种植材料(金属、陶瓷、碳素、高分子)中，选用6种材料作了动物实验预选。根据预选结果，选定以生物陶瓷为主攻方向，从而研制成功锆磷灰石陶瓷，以之进行了理化性能、生物学性能、及动物实验考查，合平种植要求。并以考查结果与钛合金、多晶氧化铝、单晶氧化铝、钛合金喷涂氧化铝、低温各向同性碳、聚砜种植作了比较，主要性能均较其它几种比较材料为优。经临床初试，锆磷灰石陶瓷的种植效果也较好，其界面为骨性结合。

Homogeneous or heterogeneous base material is selected; an alternately superimposed barrier layer and an alternately superimposed recessed layer are grown and formed at the extension of the base material; donor impurity and acceptor impurity are doped in the interface between the barrier layer and the recessed layer and in the interface between the recessed layer and the barrier layer, and the p type group III nitride material doped at a position selecting superlattice is obtained.

选择同质或者异质的基质材料；在基质材料上外延生长形成变换叠加的垒层和阱层，在垒层与阱层的界面和阱层与垒层的界面掺入施主杂质和受主杂质，得选择超晶格位置掺杂的p型III族氮化物材料，其中，每个生长周期的步骤为：生长带隙较宽的垒层，同时掺入受主杂质；生长施主杂质或受主杂质δ掺杂层；生长非掺的带隙较窄的阱层；生长受主杂质或施主杂质δ掺杂层；在N 2 气氛下对所得的选择超晶格位置掺杂的p型III族氮化物材料退火，即得目标产物。

Project contents: Construction to high-grade wall materials and energy-saving insulation materials consisting mainly of energy saving and environmental protection demonstration park, mineral wool acoustic board, gypsum-based Circular Economy Demonstration Garden to high-grade waterproof materials and polymer-based chemical building materials Pipe Industrial Park to new nano-materials and refractory castable materials such as high-tech industries based incubator industrial park, etc.

项目名称：大厂金隅新型建材有限公司金隅环保节能建材示范基地项目。项目内容：建设以高档墙体材料和节能保温材料为主的节能环保示范园、以矿棉吸声板、脱硫石膏为主的循环经济示范园、以高档防水材料和高分子管材为主的化学建材产业园、以新型纳米材料和耐火浇注料等为主的高新建材产业孵化等4个产业园。

Using transfer matrix method to analyze microperforated panel absorber s acoustic characteristic;2. The possibility and the significance of replacing fibred absorption materials by fibreless materials,especially by microperforated panels,are discussed.

简要地介绍了吸声材料的基本特点，阐述了无纤维性吸声材料（特别是微穿孔板吸声结构）取代传统的纤维性吸声材料的可能性及其重要意义，较详细地介绍了近年来德国以及我国科研人员在无纤维吸声材料研究上所取得的进展。

In this thesis, the research and the development of electromagnetic safety materials have been reviewed. On the basis of the theory of the electromagnetic field, the electromagnetic wave and the interaction between the materials and the electromagnetic wave, several kinds of new composites have been prepared by adopting new methods, electroless plating and a kind of method of Fe replacement chemical aggradation, and studied by advanced measuring and analyzing components.

对电磁防护材料的国内外研究现状进行了研究，从电磁场与电磁波理论及电磁波与材料之间的交互作用出发，采用新的思路和方法，采用化学镀和一种Fe置换化学沉积法制备了新型的电磁防护材料，并采用先进的测试分析手段研究了材料在2～18GHz电磁波频段范围的电磁波吸收性能和在100KHz～1.5GHz电磁波频段范围的电磁波屏蔽性能。

From the experimental investigation,there come to a conclusion that heat insulating material of fibre brucite,which has good performance indexs,could substitute for amianthus as heat insulating material,and it will ha...

从制得的绝热材料制品的指标得出结论：纤维水镁石绝热保温材料各项指标良好。纤维水镁石绝热材料有替代石棉，制成其它绝热材料制品很好的前景。

The polymethyl methacrylate material with super-hydrophobic surface of the invention is prepared in the following steps: 1 the polymethyl methacrylate material is first put into diamine solution, so that the ester group on the surface of the material has ammonolysis reaction with diamine molecules; 2 and then, the product of the step 1 is put into long chain fatty acid solution to be treated and the solvent is volatilized, so as to obtain the polymethyl methacrylate material with super-hydrophobic surface.

本发明具有超疏水表面的聚甲基丙烯酸甲酯材料，是按照如下步骤进行制备的：1将聚丙烯酸甲酯材料先置于二胺溶液中使聚丙烯酸甲酯材料表面的酯基与二胺分子发生氨解反应；2然后，将其置于长链脂肪酸溶液中进行处理，挥发掉溶剂，得到具有超疏水表面的聚甲基丙烯酸甲酯材料。

This paper studied penetration of asphalt emulsion and asphalt diluted by paraffin and infection of preservation; presented optimal prime coat material and dosage, and determined optimal dosage of SBS modified asphalt and base asphalt as seal coat binder sprayed on cement stabilized gravel. This paper also analysed influence of different material combination on shear intensity between base and surface. The shear intensity of earthwork cloth is also researched through analysis on different cloth, temperature and treatment on gravel.

文中通过室内试验，研究了乳化沥青和煤油稀释沥青作为半刚性基层透层材料的渗透效果，以及基层不同养生龄期对其的影响，提出了水泥稳定碎石和二灰稳定碎石基层上最佳的透层材料及其最佳洒布量；研究和分析了下封层不同透封层材料的组合、不同结合料以及不同基底材料对封层材料用量以及基面层间抗剪强度的影响。

The six cucumber materials with different low temperature tolerance were selected to be cultured in the artificial lighting incubator for 14 d under day temperature of 12 ℃,night temperature of 8 ℃,light of 8 h,light intensity of 30 μmol/(m2·s)(about 2 000 lx)and the abscisic acid,the growth hormone and the gibberellic acid(GA3) of cucumber leaves were ...

结果各黄瓜材料叶片中ABA和GA3含量均有不同程度增加，耐低温性材料越强，其增加的幅度越大，而叶片中IAA含量变化则不同，其中耐低温较强的材料增加的幅度较大，而耐低温较弱的材料有所降低，耐低温性中等的材料略有增加。内源激素含量与耐低温性的关系密切，可作为黄瓜耐低温性的间接鉴定指标之一。

All lines showed a chromosome number of 2n = 42, five of them carried botha pair of wheat-rye (Triticum aestivum-Secale cereal ) 1BL/1RS translocation chromosomes and a pair ofAgropyron intermedium chromosomes, three carried a pair of Ai chromosomes only, three otherscarried a pair of 1BL/1RS chromosomes only, and one carried neither 1BL/1BS nor Ai chromosome.

结果表明，12份材料染色体数均为42，其中5份材料均具有一对小麦-黑麦(Triticum aestivum-Secalecereal)1BL/1RS易位染色体和一对中间偃麦草染色体、3份材料只具有一对中间偃麦草染色体、3份材料只具一对1BL/1RS染色体、1份材料无1BL/1RS和中间偃麦草染色体。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。