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The results of in situ DRIFTS on propylene oxidation show that the allyl species originated from α-H abstraction of propylene were located at the wavenumbers of 1454 cm~(-1) and 1427 cm~(-1). The rate-determining step is the abstraction of an α-H abstraction from a lattice oxygen linked to a bismuth ion to form a π-allyl intermediate coordinated to a molybdenum ion. The metal-oxo group then attacks the allyl intermediate forming a σ-bonded oxygen-allyl species, which is in a rapid equilibrium with the π- bonded species. The σ-bonded species then transforms to acrolein by further abstraction of α-H. Such species as formate, carboxylate, carbonate transform to deep oxidation products. The acetone was derived from propylene by an enolic species at lower temperatures.

丙烯氧化反应体系的原位漫反射红外光谱研究结果表明,由丙烯脱氢生成的烯丙基中间物种吸收峰在1454cm~(-1)和1427cm~(-1)处;基于此提出了较完整的丙烯氧化反应网络:丙烯选择氧化生成丙烯醛主要经历丙烯脱除甲基上的一个H,生成烯丙基物种,该物种嵌氧生成σ-O络合物,脱氢得到丙烯醛前驱体,脱附生成丙烯醛;完全氧化产物是由催化剂表面上生成甲酸盐、羧酸盐、碳酸盐等形式的中间物种转化而成;较低反应温度下丙烯氧化生成丙酮,通过烯醇式中间物种氧化生成丙酮前驱体得到。

The mode of baptism is morally indifferent though effusion is exegetically and historically preferable since, in the history of salvation, the only ones who were immersed were those who were not on the Ark with Noah and Pharaoh and his armies.

虽然在解经和历史上偏向于洒水礼,但是浸礼的形式在道德上是不重要的,这是因为在救赎历史中,被淹没的是那些不在挪亚方舟里的人,以及法老和他的军队。

Tubo period sculpture and painting at the absorption of foreign art nutrition, integrated Tibetan folk arts development stage, showing the diversity of artistic styles, with a typical artistic style of Gandhara, with a clear Dunhuang in the Tang Dynasty style, there are the Central Plains sculpture style , a Nepalese style of ancient art, but also a Tibetan folk art combined with the new forms, in a sense it can be said that the development of the arts in the history of Tibet during the opening.

吐蕃时期的雕塑和绘画处于吸收外来艺术营养、融汇藏族民间艺术的发展阶段,表现出艺术风格的多样性,有典型的犍陀罗艺术风格,有明显的敦煌唐代风格,有中原雕刻风格,有尼泊尔古代艺术风格,同时也出现了同藏族民间艺术结合产生的新形式,在某种意义上可以说是西藏艺术发展史上的开放时期。

Haku arrives in his dragon form, and Sen climbs on his back so he can fly her, the Boh-mouse, and the Yubaba-fly back to the bathhouse.

白抵达他的舞龙形式,和森爬上他背上,这样他可以飞她, Boh鼠标,和Yubaba -飞回澡堂。

In very ancient Greece, Hermes was a phallic god of boundaries. His name in the form herma referred to a wayside marker pile of stones; each traveller added a stone to the pile.

在非常古老的希腊,赫密士是一位生殖神的界标,他的名字以赫尔密斯方形石柱的形式出现,位于一大堆石头上的路旁标记;每一位旅行者都给石堆添上了石块。

Therefore, the landscape and pastoral poetry of Ch'ien Ch'i, in form and technique on, he succeeds Hsieh Ling-yun and Hsieh T'iao more close to Wang Wei; at being at spirit, he is follow T'ao Ch'ien and Wang Wei.

钱起的山水田园诗歌,在形式和手法上,是承继二谢而接近王维;在精神上,是追随效法陶潜和王维。

After reduction, palladium existed in Pd° state on mordenite.

Pd/HM上的钯在还原过程中与丝光沸石相互作用加强,还原后以Pd形式存在,并提高了丝光沸石上的质子酸强度。

In its classical form, however, the Vaishesika school differed from the Nyaya in one crucial respect: where Nyaya accepted four sources of valid knowledge, the Vaishesika accepted only perception and inference as being such.

然而,在古典形式的胜论派上,胜论派在至关重要的方面上不同于正理派:正理派承认获得正确知识的四个来源,而胜论派只是接受理解和推论。

The independence of words is shown phonologically by the fact that they may be preceded and followed by pauses; orthographically by their separation by means of spaces or punctuation mark; syntactically by the fact that they may be used alone as a single utterance; and semantically by the possibility of assigning to them one or more dictionary meanings.

现代汉语对词的一般定义为:词是语言中最小的、能独立运用的、形体和意义都固定化的造句单位。两种语言中关于词的描述是比较相近的: 1都有稳定的结构形式 2都有相对独立的概念 3是句子的结构要素差异: 1读音上 2书写上构词对比词是语言的基本单位,但并不是最小的有意义的单位,还可以分成更小的单位。

Based on the literature summary, we pointed out the inadequacy of the researches in the past, as a whole, due to the comparatively frail achievements that the western psychology has attained in the field of writing, the past researches, on the self-regulation strategy forms and the mechanisms, were lacking of a clear theoretical model and enough positivistic support, or, it did not have relatively mature theoretical model and research methods.

在此基础上,我们指出了以往研究的不足:由于总体来说西方心理学在写作领域所投入的工作,所取得的成就相对薄弱,因此,以往研究在关于写作构思的自我调控的策略形式及其机制问题上缺乏清晰的理论范型和足够的实证支持,或者说,还没有形成比较成熟的理论模型和研究方法。

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The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。

The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.

聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力