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In the first part, it was investigated the interaction between Pb2+ and La4Ti9O24 ceramic bulk. The result shows that a significant Pb2+ diffusion into La4Ti9O24 ceramic bulk and a significant crystallization of the La2/3TiO3-type phase is clearly observed in the Pb2+ diffusion layer. The reacted zone consists of the La2/3TiO3-type phase exhibits the linear dependence of the square of the thickness, x, on the heat-treated time, t, in excellent agreement with the parabolic law x2 = kt, where k is the growth rate coefficient. The kinetic study thus indicates that the Pb2+/La4Ti9O24 interaction strictly obeys the theory of the reactive diffusion. Furthermore, the experimental k values were used to determine the associated activation energy, Ea, for the formation of La2/3TiO3-type phase using the Arrhenius plot and the following least-square equation, ln =-Ea/RT + A, where T is the annealing temperature, R is the universal gas constant, and A is a constant, resulting in Ea ~ 607 ?b 60 kJ/mol.

首先, 以巨观的方式观察PbO与La4Ti9O24陶瓷体介面的反应现象;利用X-ray绕射分析以及扫描式电子显微镜来观察不同的热处理温度以及不同的持温时间所制作的样品,研究结果发现, Pb2+离子会渗入到La4Ti9O24陶瓷内,同时在Pb2+离子所渗入的区域内会产生新的La2/3TiO3-type钙钛矿斜方晶相;藉由量测不同温度与时间之样品,其因Pb2+离子渗入而产生之La2/3TiO3-type相层厚度之关系,符合反应式扩散机制中 x2 = kt 之关系式(其中 x:扩散层厚度; k:反应速率常数; t:反应时间);进一步将不同实验条件所得到之反应速率常数值代入Arrhenius方程式ln (k =-Ea/RT + A ,其中Ea:活化能; T:绝对温度; R:气体反应常数; A:常数,可以求得Pb2+离子与La4Ti9O24陶瓷发生反应式扩散所需之活化能为607 ± 60 kJ/mol。

When there is plenty of rope available, the following method illustrated in Figure 20-3 is most secure. The best river man goes first belayed by the second best who goes last. When A gets across, he moves upstream and sets up a belay opposite B. and the next wader ties in at B. Then C pendulums across taking about the same path as A.

水性最好的A首先过溪,由水性次佳,同时也是最后一个过溪的B负责确保工作,当A到达对岸之后,走到B的正对岸做好确保,下一个渡溪者C在B点套入胸部绳圈确保,C的渡溪路径与A相同,当C渡溪时B要给出绳子而A要将绳子收紧,如果C失足被冲掉,会被冲到对岸

When there is plenty of rope available, the following method illustrated in Figure 20-3 is most secure. The best river man goes first belayed by the second best who goes last. When A gets across, he moves upstream and sets upa belay opposite B. and the next wader ties in at B. Then C pendulums across taking about the same path as A. while B lets rope out, and A keeps the rope taut. If C falls, he should be pendulumed to the most favorable bank (hopefully to A so that the crossing is accomplished).

水性最好的A首先过溪,由水性次佳,同时也是最后一个过溪的B负责确保工作,当A到达对岸之后,走到B的正对岸做好确保,下一个渡溪者C在B点套入胸部绳圈确保,C的渡溪路径与A相同,当C渡溪时B要给出绳子而A要将绳子收紧,如果C失足被冲掉,会被冲到对岸(最好是冲到A抵达岸边的点)。

When there is plenty of rope available, the following method illustrated in Figure 20-3 is most secure. The best river man goes first belayed by the second best who goes last. When A gets across, he moves upstream and sets up a belay opposite B. and the next wader ties in at B. Then C pendulums across taking about the same path as A. while B lets rope out, and A keeps the rope taut. If C falls, he should be pendulumed to the most favorable bank (hopefully to A so that the crossing is accomplished).

水性最好的A首先过溪,由水性次佳,同时也是最后一个过溪的B负责确保工作,当A到达对岸之后,走到B的正对岸做好确保,下一个渡溪者C在B点套入胸部绳圈确保,C的渡溪路径与A相同,当C渡溪时B要给出绳子而A要将绳子收紧,如果C失足被冲掉,会被冲到对岸(最好是冲到A抵达岸边的点)。

The action of page headline is self-evident, the rank that searching engine gave caption very great weight in the mechanism, look in me a successful caption should have these a few kinds of features: A, true the clou that mirrorred page article, caption and content write a law abhorrently is wrong apparently, it can let you lose the faith that searchs engine, also can let more caller prediction of a person's luck in a given year drop likewise. On the B, foundation in A, beautiful idea designs a more absorbing caption, a headline that contains window often searchs the webpage before the result to have taller hit in you than the platoon, as this hit rise, your rank also can be alled alone by search engine place takes seriously slowly, this kind of phenomenon once was in the article of President SEO (the imitate of the soft costal region of Baidu and Baidu place ignore is searched) in had mentioned. C, reasonable keyword density, avoid by all means does not pile up again in caption keyword, this kind of method already too pediatric.

页面标题的作用不言而喻,在搜索引擎的排名机制中给予了标题很大的权重,在我看来一个成功的标题应该具有这几种特征:A、真实反映了页面文章的中心思想,标题和内容不一致的写法显然是错误的,它会让你失去搜索引擎的信任,同样也会让更多的访客流失掉。B、在A的基础上,花心思设计一个更加吸引人的标题,一个含有亮点的标题往往比排在你搜索结果前面的网页有更高的点击率,随着这个点击率的提高,你的排名也会慢慢被搜索引擎所重视,这种现象曾经在SEO校长的文章(百度的软肋与百度所漠视的模拟搜索)中提到过。C、合理的关键词密度,切忌在标题中不要再堆积关键词了,这种手段已经太小儿科了。

The resin composition for a platable substrate of the present invention comprises 100 parts by weight of a resin composition comprising 10 to 60% by weight of a graft copolymer prepared by graft polymerization of a rubbery polymer (A1) and a monomer component (A2) containing an aromatic alkenyl compound monomer unit and a vinyl cyanide compound monomer unit and 40 to 90% by weight of the other polymer provided that the total amount of the components (A and is 100% by weight, and 5 to 40 parts by weight of a phosphate ester flame retardant having a molecular weight of more than 326 or 2 to 40 parts by weight of a red phosphorus flame retardant.

本发明涉及一种镀覆基材用树脂组合物,其特征在于,该树脂组合物是在100质量份的树脂组合物中,混合5~40质量份的分子量超过326的磷酸酯系阻燃剂或2~40质量份的红磷系阻燃剂形成的物质,其中树脂组合物由10~60质量%的接枝共聚物和40~90质量%的其它聚合物组成(A+=100重量%,接枝共聚物通过在橡胶质聚合物(A1)上接枝聚合含有芳香族烯烃化合物单体单元和氰化乙烯基化合物单体单元的单体成分(A2)得到。

A small baglike attachment forming part of a garment and used to carry small articles, as a flat pouch sewn inside a pair of pants or a piece of material sewn on its sides and bottom to the outside of a shirt.

口袋:一种小型袋状附属物,形成衣物的一部分。被用来携带小的物件,如缝在裤子里的扁平的袋子或缝在衬衣外边的两侧和底部的一片布料 A small sack or bag。

Results The main biochemic al items such as pH,osmole,electrode slope and linear scope between our develope d internal standard A and the primary internal standard A in NOVA 16 analyzer re agent pack were in good accordance.

结果:自配内标准A液与原装内标准A液的主要理化指标:pH 、渗透压、电极斜率、线性范围均一致,自配内标准A液的精密度与原装内标准A液所测结果之间的相关性(r=0.950~1.000)及自配A液的批内(P>0.05)、批间(P>0 。05)稳定性较好,长期使用对电极无损害。

SARAH HARRIS: A, a, a, ok, lets go around the different vowels let's go round the different vowels to see how you get on….o, o, o…a little bit breathy…o. o

莎拉哈里斯:A,a,a……好的,让我们试试发不同的元音,发不同的元音看看你恢复的怎么样了。O,o,o……稍微大声一点,O,o

Floral organ determination is best explained by the ABCDE model postulated by genetic studies of Arabidopsis thaliana. Sepals are determined by A and E class genes; petals are determined by A, B, and E; stamens by B, C, and E; and carpels by C and E class genes. A, B, C, and E class gene lineages are known having duplicated several times during the evolution of angiosperms. One of the noted major duplication events occurred in the origin of the early angiosperms, leading to the formation of subgroups of B/C/D/E class. Another one occurred near the basal eudicots and gave rise to further subgroups in A/B/C/D/E class genes among core eudicots. The phylogenetic position of the family Buxaceae is located right where the second major duplication of ABCDE genes might have occurred, which is supported by multiple gene (nuclear 18S rDNA, chloroplast rbcL and atpB) phylogenetic analyses.

目前经由模式植物阿伯芥的研究,建花部器官决定基因的调控,即花萼由A、E 群基因共同决定,花瓣由A、B、E 群基因,雄蕊由B、C、E 群基因,而心皮由C 和E 群基因决定。A、B、C、E 四群基因在被子植物的演化过程中发生过次的复制事件,其中比较重要的一次发生在早期被子植物演化出之时,形成B/C/D/E 群基因的次系群;另一次复制事件则发生在真双子植物基群附近,形成仅於核心真双子植物的A/B/C/D/E 群基因之次系群。

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推荐网络例句

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特,那个是爱朗。

Articulate the aims, objectives and key aspects of a strategic business plan.

明确的宗旨,目标和重点战略业务计划。