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atomic form
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  “atomic form”译为未确定词的双语例句
     AN INVESTIGATION ON THE TRANSPORTATION AND DEPOSITION OF GOLD IN ATOMIC FORM
     金以原子状态迁移成矿的探讨
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  相似匹配句对
     On form
     “形式”论
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     AN INVESTIGATION ON THE TRANSPORTATION AND DEPOSITION OF GOLD IN ATOMIC FORM
     金以原子状态迁移成矿的探讨
短句来源
     Form&artist
     形式感的大师——卡尔·米勒斯和他的雕塑
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     The calculation of an integration of Xα method form atomic parameters
     X_α方法中的一个积分的参量化
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     THE ATOMIC PARTITION FUNCTIONS
     原子配分函数
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  atomic form
At high occupancies of the surface by oxygen (θ), the reaction proceeds by the reaction of H2 with oxygen adsorbed in atomic form.
      
We express the corresponding transition probabilities through the known inelastic atomic form factors widely used in the theory of relativistic collisions of charged particles with atoms.
      
We express the corresponding transition probabilities through the known inelastic atomic form factors widely used in the theory of relativistic collisions of charged particles with atoms.
      
It is shown that the theoretical consideration of inelastic collisions of atomic particles in first Born approximation in certain cases can be carried through for multielectron atoms, for which only a knowledge of atomic form factors is required.
      
The absence of sites for the activation of oxygen in the atomic form is responsible for the low activity of zeolites in the C2H6-O2 system.
      
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Based on the measurement data of gold in a gold deposit in Guangxi. together with the data of some major gold deposits in the North- Eastern and Northern parts of China, it is found that gold is mainly transported with silica melt. Through simulated test, it is shows that gold may be transported in atomic form.

通过广西某金矿床中金测定,综合东北和华北13处金矿床中金的测试数据,认识到金元素的迁移形式,多数与二氧化硅熔体共同迁移。通过模拟实验,初步认为金的成矿过程,可能呈原子状态迁移。当然,此项工作还有待进行系统而全面的实验研究。

This paper gives a simple method to prepare a series of strong acid canon exchange resins where Pd disperses in atomic form. One-step synthesis of methylisobutyl ketone(MIBK) form acetone and hydrogen can be carried out in the presence of this type of resin-Pd catalyst. The functions of this catalyst are the condensation of acetone to from mesityl oxide(MO) is catalyzed by the acid site at one side, and then MO is hydrogenated selectively to produce MIBK by the palladium deposited on the catalyst...

This paper gives a simple method to prepare a series of strong acid canon exchange resins where Pd disperses in atomic form. One-step synthesis of methylisobutyl ketone(MIBK) form acetone and hydrogen can be carried out in the presence of this type of resin-Pd catalyst. The functions of this catalyst are the condensation of acetone to from mesityl oxide(MO) is catalyzed by the acid site at one side, and then MO is hydrogenated selectively to produce MIBK by the palladium deposited on the catalyst surface.It is found that the resin-Pd with H+form has the highest selectivity to form MIBK and a higher conversion of acetone can be obtained from the prepared six resin-Pd catalysts. Some factors, such as the volume of absorbed hydrogen, exchange capacity, and particle diam., would affect the selectivity. The more the catalyst absorbs hydrogen, the higher the selechvity is. So the resin-Pd catalyst with smaller diam. would have a higher selectivity. If a large amount of hydrogen is absorbed on palladium, it would prevent the further condensation of MO, because acetone would condense to MO at the acid centre first, and then MO is hydrogenated immediately to MIBK. The higher selectivity can be obtained when the exchange capacity is about 4.3. It can be explained that a too high exchange capacity (or much more H+centre) would increase the by-products such as diisob utyl ketone, etc.The one-step synthesis of MIBK catalyzed by Pd-DH is studied under different reachon conditions. The conversion of acetone increases with a temperature under 130t, and above that, there is only a slight increasing. The selectivity to form MTBK comes to its maximum right at 130t. The pressure of hydrogen has a small influence upon the properties of Pd-DH catalyst. The catalyst activity decreases with acetone liquid hourly space velocity(LHSV) under. 8h-1, and only a small change can be observed above that. The optimum synthesis conditions are 130℃ 2 MPa pressure of hydrogen, and 5 h-ILHSV. The per-pass conversion of acetone is 48% under the optimum conditions while condensation of acetone with acid alone in the absence of hydrogen is reported to be only 19%. The selectivity of acetone to MIBK is 98%. There is a small amount of isopropanol and diisobuttyl ketone as by-products.

以较为简便的方法制备了几种离子交换树脂-Pd催化剂,并将此类双功能催化剂用于丙酮和氢气一步法合成甲基异丁基酮(MIBK).实验发现,催化剂的吸氢越大,反应选择性越好;而其交换容量过高则降低了选择性,升高温度有利于提高反应活性和选择性,但有一适宜值增大丙酮空速(LHSV)降低了反应活性和选择性,压力对反应影响不大.在各种树脂-Pd催化剂中Pd-干氢树脂(Pd-DH)的性能最好.在较佳的反应条件:温度130℃,压力2MPa,LHSV5h-1,氢酮比0.4下,用pd—DH催化合成MIBK,丙酮转化率为48%,MIBK选择性可达98%.

The surfactant-capped ZnS nanoparticulate multilayer film has been fabricated byLangmuir-Blodgett technique. ZnS LB film was investigatal by the small angle X--raydiffraction, XPS, atomic form microscopy and translnjssion electron dricroscopy. The results indicate that ZnS nanoparticulate LB film is one--d~ional quasi--superiattice.

采用LB膜技术制备了表面活性剂包埋的硫化锌纳米粒子多层膜,并利用小角X射线衍射、光电子能谱、原子力显微镜和透射电镜对其结构进行了表征.结果表明制成的ZnS纳米粒子LB膜为一维准超晶格.

 
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