查询词典 porous

Study the bioactivity of the n-HA/PA66 composite and the effects it would be to body's metabolism of calcium and phosphorus ion in vivo.(3) Study the osteo-conductivity and the ability to repair bone defect of the porous n-HA/PA66 composite and the feasibility use it as the scaffold of bone tissue engineering. Objects and Methods as follows: 1.To evaluate the biocompatability of nano-hydroxyapatite crystals and polyamide composite (n-HA/PA66) with the L929 cells.To proceed the morphological observation and take pictures of L929 cells after 1d,2d,4d,and 7d of co-cultured with extract of n-HA/PA66 ,and direct contact with n-HA/PA66.To determine light absorbtion value of every hole under 500 nm with enzyme linked immunity instrument after 1 d,2 d,4 d,and 7 d of contact of n-HA/PA66 extract with L929 cells,and direct contact with n-HA/PA66.In the meanwhile calculate the relative multiplication rate of cells,and evaluate them by six degree tests for cytotoxicity. To investigate the acute and chronic toxic reaction on the whole body induced by the new nano-hydroapatite crystals and polyamide composite(n-HA/PA66)after implanting in vivo and its effects on partial constitution of animal organs after implanting in vivo,and evaluate the potential and degree of subcuticular stimulation reaction.

本实验主要由以下三部分组成：一、n-HA/PA66 复合材料在动物体内、体外的生物相容性及生物安全性评价二、n-HA/PA66 复合材料植入动物体内的生物活性及近期对机体钙、磷代谢影响的实验研究三、网孔 n-HA/PA66 复合材料作为支架修复兔桡骨节段缺损的动物实验研究主要研究目标及方法如下：参照 GB/T16886.5-1997-ISO 10993-5：1992《医疗器械生物学评价细胞毒性试验体外法》之评价标准和要求，采用规定的 L929 细胞(小鼠结缔组织成纤维细胞)，分别经直接接触和材料浸提液与细胞共培养等方式对 n-HA/PA66 复合材料进行细胞毒性测试，采用细胞形态观察法观察两种细胞各组在 24h、48h、72h、5 天后各时相点的细胞形态学变化，并在显微镜下照相，从而对细胞与材料的生物相容性进行定性评价；同时采用细胞生长抑制法，以酶标仪定量测定评价各组 1，2，4，7 天 L929 细胞的相对增殖率，以定量测定并判别材料对细胞的毒性程度。

Technical parameters of porous plates used in water sublimator were analyzed.

30多年来，水升华器一直是美国和俄罗斯在舱外航天服中使用的热沉系统[1 ] 。

An experimental study under constant heat flux is carried out on water sublimator with different porous plates.

热控系统作为舱外航天服便携式生保系统的一个重要组成部分，已进行了大量的研究。

The attention is focused on the effects of heat flux, physical parameters of porous plate, pressure of feed water and placement on performance of sublimator.

探索了多孔板的制造方法，设计了水升华器试验组件和试验装置，对不同的多孔板升华器在恒热流条件下进行了试验研究。

Test results have proved that the basic design concept of sublimator is feasible and that sintered powder porous plates can meet experimental needs of sublimator.

试验结果证明文中提出的升华器基本的设计概念是可行的，粉末烧结多孔板可以满足升华器的试验要求。

The experimental method of mercury porosimetry was applied to determine the porous properties of typical mixed bio\|briquettes in two typical pore systems to overcome the limitations of past researches on the characteristics of their sulfur retention were compared to those of classical sulphuration reaction.

根据生物质型煤的孔径分布特征，建立孔隙分形结构模型，模拟相同分维的生物质型煤的孔隙率和比表面积；从孔隙分形结构的形核、生长的角度，探究生物质型煤的脱硫机理；进而得出生物质型煤分形结构存在的孔径范围，以及分维、均孔等分形几何参数与生物质质量分数的规律。

The hardness of the mixed gels increased with salts concentration, while the protein solubility, water-holding capacity and sulphydryl group content had a decreased trend. The microstructure of mixed gels showed a porous network and particulates structures by addition of NaCl and CaCl2 respectively.

结果表明：随着pH的增加，凝胶的硬度和溶解度减小，添加淀粉进一步降低了混合凝胶的溶解度；盐浓度的增加使混合凝胶硬度增加，而蛋白溶解度、持水力和巯基含量则呈下降趋势；添加NaCl 和CaCl2的混合凝胶分别呈现出多孔网状和颗粒状结构。

Thanks to our strong technical strength, excellent financial capability and stable customer resources, we've successively enhanced cooperation with AMRICAN DOW CHEMICAL COMPANY, CNOOC and Shell Petrochemicals Company Limited and GERMANY BAYER in environmental-friendliness, flame retardation, durability, high-temperature resistance, porous acoustical absorption, shrink resistance, non-toxicity and tastelessness so that our products sell well both at home and abroad.

并且凭借自身精湛的技术力量，雄厚的经济实力和稳定的客户资源，先后与美国陶氏化学有限公司和中海壳牌化学有限公司以及德国拜耳公司加强了对环保阻燃、耐用、耐高、透气性吸音、抗收缩及无毒无味等方面的合作，使产品畅销海内外，同时与温州、上海、北京、杭州及浙南地区1000多家客户建立长期的合作关系，使企业产值与销售额连年出现大幅度增长。

The cellular structure of porous metal-bonded diamond wheel can be modeled by tetrakaidecahedron and their elastic modulus can be calculated by the finite element method. Furthermore, diamond is acted as reinforced particle.

利用十四面体模型描述开孔金属结合剂金刚石砂轮胎体的胞体结构，并用有限元方法确定材料的弹性模量，进而将金刚石以增强颗粒的形式加入胎体材料中，形成开孔结构的金属结合剂金刚石砂轮节块的有限元模型。

By mean of dehydration and adsorption of water experiments, it is found thatn it is porous ion crystal, and is able to adsorb small molecules such as water molecules selectively.

用X-粉末衍射对晶体进行脱水和吸水实验，其结果表明该化合物为一透气型离子结晶，能够在干燥条件下失去水分子，在潮湿条件下吸附水分子，而本身分子结构不发生变化。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷