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Compared with the graphite, the coefficients of friction of the RL-C/C are lower under the same load of about 0.080.12, and the increasing range of the volume losses are still lower than those of the graphite. Compared with the SL pyrocarbon material, the COF and the volume loss of the SL-C/C are about 0.020.05 and 0.2 mm3, lower than those under the same load. The COFs of most RL-C/C and SL-C/C specimens remain stable or decrease slightly with time, while those of the graphite and pyrocarbon specimens increase. The thickness of the integrated friction film of the RL-C/C decreases with load, but the wear surface of the SL-C/C is rough. Tough the wear surface of the graphite is integrated, the serious abrasive wear make the debris move easily and accumulate on the edge of the wear trace to form a restacked morphology. On the wear surface of the pyrocarbon material, some loosed debris, circular worn holes and flake worn out pyrocarbon has been found.

结果表明:PAN炭纤维改善C/C复合材料的摩擦磨损行为;在实验载荷范围内,与高强度石墨材料相比,含RL炭C/C复合材料的摩擦因数降低0.08~0.12;体积磨损量增幅降低;与热解炭试样相比,具有SL炭C/C复合材料的摩擦因数降低0.02~0.05,体积磨损量低0.2 mm3左右;随着时间的延长,大部分C/C复合材料的摩擦因数基本相对稳定或小幅下降,而石墨、热解炭块的摩擦因数均不同幅度的上升;具有RL炭的C/C复合材料摩擦表面膜厚度随载荷增加而降低,具有SL炭的C/C复合材料摩擦表面较粗糙;高强石墨能形成较完整致密的摩擦膜,但磨粒磨损严重,磨屑易在摩擦膜边缘形成层状堆积;热解炭块摩擦表面磨屑堆积松散,有较多的孔洞以及热解炭层整体剥落的形貌。

Congregation obtained after chitosan k and a treatments showed more tightness than sediments obtained without chitosan treatment, sediments after chitosan b and c treatments were network in structure. Mixed systems of pectin, protein and polyphenol were applied for studying a simulated system of kiwifruit juice. It was shown that the aggregates of pectin molecules in pectin solution were dispersing tubular globules. Particles in mixed solution of pectin and bovine serum albumin had two states: one was circular in photo, the other contained single particle or aggregates of several particles. Pectin decreased the interaction between protein and polyphenol and strengthened the stability of mixed solution of pectin, protein and polyphenol. Chitosan flocculated mixed solution of pectin, protein and polyphenol, and the floccule was white, having a network structure.

用果胶-蛋白质-丹宁酸混合体系作为猕猴桃原果汁的模拟体系研究结果表明:1、果胶溶液中果胶分子聚集物中空球形均匀分散;2、果胶/牛血清白蛋白混合溶液中的球形粒子有两种:粒子中央光线可透过,照片上环形;粒子的中央包含有单个或多个球形粒子的聚集体,认为粒子的中央是蛋白质,外层是果胶;3、果胶的存在抑制或减弱了蛋白质-丹宁酸之间的相互作用,果胶起到防止蛋白质-多酚产生沉淀的作用,增强了溶液的稳定性;4、壳聚糖加入果胶-蛋白质-丹宁酸混合溶液中时,可以絮凝果胶-蛋白质-丹宁酸混合溶液,溶液中出现白色的网状絮凝物。

For the foramen spinosum, bilateral symmetry in 3 cases(15%) and asymmetry in 17cases(85%).

卵圆孔圆形8例(20%),椭圆形32例(80%)。

Results All tumors were located near the foramen of monro, 3 patients were round like and 6 patients were slightly lobulated in shape.

结果 所有肿瘤均位于侧脑室孟氏孔附近,3例类圆形,6例轻度分叶状。

Wings long and narrow, following the edge of forewing white yellow corrugated tortuous three times, when closure was两翅three adjacent diamond-shaped plaque.

翅狭长,前翅后缘黄白色三度曲折的波纹,两翅合拢时三个接连的菱形斑。

The microstructure and chemical composition of melt formed in process of plastic deformation of gabbro are studied using the transmission electron microscope. The result shows that initial melt occurs at 950~1000℃ in a filmlike shape along the boundary between two plagioclase grains or in the tubules of triangle between three plagioclase grain section.

采用透射电镜对辉长岩塑性变形过程中产生的熔体进行了研究,结果表明,在950~1000℃时出现初熔,初熔熔体薄膜状分布于两个斜长石边界,或者三角形状分布于3个斜长石之间。

The most polluted areas is near Tianjin second gasworks and around sewage river as well as sewage irrigation area. So we can conclude the major sources of pollution is atmospheric deposition and sewage irrigation. Second, It is positive correlation between the heavy-metal contamination and layered silicate minerals, while it is negative correlation between heavy-metals and quartz , feldspar as well as other minerals.

二、重金属污染元素含量与层状硅酸盐矿物含量正相关,而与石英长石等矿物含量负相关,充分说明污染元素主要赋存在层状硅酸盐矿物中,这与矿物自身的结构有着密切的关系,层状硅酸盐矿物具有很大的层间域,有利于对其他物质的吸附作用。

The average geometric means of antibody titer for rubella and mumps were higher (27.74, 28.94) among urban children of 1-2 years old with a decreasing trend as the increment of the children's age.

城市儿童风疹和腮腺炎抗体几何平均浓度1~2岁组最高(27.74%, 28.94%),随年龄增长下降趋势;农村儿童风疹和腮腺炎体阳性率1~2岁组最低(24.2%, 21.2%),随年龄增长上升趋势。

Calculation results indicate that the total energy increases when oleic acid is on the surfaces of (001) and (100) of gibbsite respectively. This can explain that the stability of systems decrease when there is some oleic acid on the surface of gibbsite. The calculation results of equilibrium morphology and growth habit show that the volume of growth crystal is larger when some oleic acids with "horizontal" mode exist on the surfaces (001) and (100) of gibbsite.

计算结果表明:油酸接近氢氧化铝(001)和(100)表面时,体系总能量升高,说明油酸的存在可降低体系的稳定性;油酸在氢氧化铝(001)和(100)表面上时,油酸分子"卧"式时,长大后晶粒体积大于无杂质存在的情况,而油酸分子"立"式时,长大后体积小于无杂质时晶粒的体积。

On the whole, glycolate oxidase activity declined according to the growth stage as the same as the changes of photorespiration.

整体上,乙醇酸氧化酶活性随生育期推移而下降趋势,这与光呼吸在生育后期下降趋势的表现相一致。

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推荐网络例句

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了,排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意,我建议我们在价格上大家各让一半。

After an hour and no pup, look for continued contractions and arching of the back with no pup as a sign of trouble.

一个小时后,并没有任何的PUP ,寻找继续收缩和拱的背面没有任何的PUP作为一个注册的麻烦。