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boron-nitrogen
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  硼氮
     In this paper three stability indexes are suggested from the results of extended Hückel calculations to compare the stabilities of transition metal complexes (σ-and sandwich complexes) of typical sulfur-nitrogen ring S_2N_2 and Boron-nitrogen ring H_4B_2N_3~-. Qualitative MO theory is used to discuss the electronic structure and chemical bonding in these complexes.
     本文从推广 Hüekcl 计算的结果,提出了三个衡量稳定性的指标,对典型的硫氮环和硼氮环:S_2N_2和 H_4B_2N_3~-的过渡金属配合物(σ配合物和夹心配合物)的稳定性作了比较,并用定性分子轨道理论对配合物的电子结构和化学成键作用作了讨论。
短句来源
     Clar and Sextet Polynomials of Boron-nitrogen Fullerenes
     硼氮富勒烯的Clar多项式和Sextet多项式
短句来源
     A boron-nitrogen modified castor oil was synthesized as lubricant additive, and its main functional group was characterized by infrared spectrum.
     在蓖麻油中引入硼、氮,合成了新型润滑油添加剂——硼氮型改性蓖麻油润滑添加剂,并利用红外光谱对其主要官能团进行了鉴定。
短句来源
     A Study of Bonding on Four-Membered Boron-Nitrogen Rings
     四元硼氮环成键的研究
短句来源
     The influence of surface treatment,such as baronisation,nitrizing and boron-nitrogen co-permeation,on abrasion resistance of Cr12Mo1V were researched.
     研究了渗硼、渗氮、硼氮共渗等表面处理对Cr12Mo1V模具钢耐磨性的影响。
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  “boron-nitrogen”译为未确定词的双语例句
     STRUCTURE, PERFORMANCE AND APPLICATION OF SPECIAL TYPE BORON-NITROGEN DIAMOND
     特殊类型含硼、氮金刚石晶体的结构、性质与应用
短句来源
     Research on Tribological Behaviors of Boron - nitrogen Modified Rapeseed Oil as Water - based Lubricating Additive
     硼氮化菜籽油水基润滑添加剂的摩擦学性能研究
短句来源
     Four types of new lube additive, boron-nitrogen modified rapeseed oil, were synthesized.
     在菜籽油中引入硼、氮 ,合成了四种新型润滑油添加剂———硼氮化改性菜籽油润滑添加剂。
短句来源
     In addition to preserving the quality of high-tension, high-stiffness, and superior heat-resistance of the whole piston, the surface of the skirt part of the hyper-eutectic-silica-alumina-alloy piston will arrive at the form of double-deck covered films to develop the functions of the anti-cement and the abrasion-resistance by strengthening it with plasma siliconizing and poly-crystalline cube boron-nitrogen (PCBN).
     过共晶铝硅合金活塞的裙部表部经等离子渗硅与多晶立方氮化硼(PCBN)聚晶沉积薄膜所构成的双层覆膜强化后,既能保全铝硅合金活塞整体的高强度、高刚度与优良的耐热性能,又能显著提高其裙部表面的抗胶合性能和耐磨性能。
短句来源
     Synthesis and Tribological Behavior of Boron-nitrogen Modified Fatty Acid as Water-based Lubricating Additive
     含硼和氮的脂肪酸水基润滑添加剂的制备及其摩擦学性能
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  相似匹配句对
     Investigation of boron and nitrogen co-doping diamond
     硼-氮原子共掺杂金刚石研究
     STUDY ON BORON AND NITROGEN NUTRIENT INTERACTIONS IN COTTON
     棉花硼氮营养关系的研究
短句来源
     Effect of Boron and Molybdenum on Nitrogen Metabolism of Peanut
     硼、钼对花生氮代谢的影响
短句来源
     Clar and Sextet Polynomials of Boron-nitrogen Fullerenes
     硼氮富勒烯的Clar多项式和Sextet多项式
短句来源
     STRUCTURE, PERFORMANCE AND APPLICATION OF SPECIAL TYPE BORON-NITROGEN DIAMOND
     特殊类型含硼、氮金刚石晶体的结构、性质与应用
短句来源
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  boron-nitrogen
The proposed polyhedral boron-nitrogen molecules, having stable dielectric characteristics and highly porous structure, may be of interest for the creation a family of new intercalated nanomaterials based on these nanoparticles.
      
A quantum-chemical model was made of new quasi-one-dimensional crystals, consisting of regular chains of metallocarbohedrenes Sc8C12, Ti8C12, and V8C12 (isomers with Th symmetry) inside a single-wall (12,0) boron-nitrogen nanotube.
      
New Quasi-One-Dimensional Crystals of Metallocarbohedrenes (Sc,Ti,V)8C12 in (12,0) Boron-Nitrogen Nanotubes: Quantum-Chemical Si
      
The reaction between acetone monoalkylhydrazones and aldehydes in the presence of boric acid derivatives has given five-membered boron-nitrogen heterocycles, the stability of which is to a large extent dependent on the substituents in the ring.
      
Boron-nitrogen heterocycles from 2-dialkylborylaminothiazoles and isocyanates
      
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In this paper three stability indexes are suggested from the results of extended Hückel calculations to compare the stabilities of transition metal complexes (σ-and sandwich complexes) of typical sulfur-nitrogen ring S_2N_2 and Boron-nitrogen ring H_4B_2N_3~-.Qualitative MO theory is used to discuss the electronic structure and chemical bonding in these complexes.It is predicated that σ-complexes are more stable than π-complexes for H_4B_2N_3~- ring,but for S_2N_2 ring its σ-complexes are not as stable...

In this paper three stability indexes are suggested from the results of extended Hückel calculations to compare the stabilities of transition metal complexes (σ-and sandwich complexes) of typical sulfur-nitrogen ring S_2N_2 and Boron-nitrogen ring H_4B_2N_3~-.Qualitative MO theory is used to discuss the electronic structure and chemical bonding in these complexes.It is predicated that σ-complexes are more stable than π-complexes for H_4B_2N_3~- ring,but for S_2N_2 ring its σ-complexes are not as stable as π-complexes.It is also predicated that from analysing overlap populations and charge distributions,activating the sulfur atoms on S_2N_2 ring should be a important step of synthesizing its sandwich complexes.

本文从推广 Hüekcl 计算的结果,提出了三个衡量稳定性的指标,对典型的硫氮环和硼氮环:S_2N_2和 H_4B_2N_3~-的过渡金属配合物(σ配合物和夹心配合物)的稳定性作了比较,并用定性分子轨道理论对配合物的电子结构和化学成键作用作了讨论。结果表明,对于 H_4B_2N_3~-环,σ配合物比π配合物稳定,但S_2N_2环则相反,σ配合物不如π配合物稳定。从π重迭布居和电荷分布分析,活化 S_2N_2环上的硫原子应是合成夹心配合物的重要步骤。

The applicable properties in lubricating oil of boron-nitrogen type extreme pressure and antiwear additives in reviewed by experiments in this poper.

本文借助实验阐明了硼氮型极压抗磨添加剂在润滑油中的应用性能。

Black diamonds with grain size being about 20~50μm, containing boron over 1wt%, were firstly synthesized from the B 4C-transition metal alloys (Ni 70 Mn 25 Co 5 and fe 55 Ni 29 Co 16 ) system under the conditions of 5.8GPa and 1480℃. There are lots of Lamina like and needle like crystals in the sample. Professon Guo Qingquan newly indicates the atomic and molecular processes and features of the diamond synthesis, which supports the initial theoretical search for the formation and...

Black diamonds with grain size being about 20~50μm, containing boron over 1wt%, were firstly synthesized from the B 4C-transition metal alloys (Ni 70 Mn 25 Co 5 and fe 55 Ni 29 Co 16 ) system under the conditions of 5.8GPa and 1480℃. There are lots of Lamina like and needle like crystals in the sample. Professon Guo Qingquan newly indicates the atomic and molecular processes and features of the diamond synthesis, which supports the initial theoretical search for the formation and the feature of this diamond. By means of the model,he predicts that boron skin and boron Nitrogen skin diamonds containing lighly rich boron, with excellent properties and morphologies may be synthesized using the above method.

在5.8GPa和1480℃条件下,首次用B4C作碳源,通过触媒合金(Ni70Mn25CO5及Fe55Ni29CO16)的作用,合成出粒度为20~25μm,含硼量高于1wt%的黑色金刚石,晶体中存在大量针形体。最近艹勾清泉教授提出了这种金刚石形成的原子分子过程模型。用模型预言可能形成具有某些优异特性的针形硼皮及硼氮皮金刚石

 
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