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induced twinning
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  “induced twinning”译为未确定词的双语例句
     All these explain the fact of rare earth elements induced twinning from electronic level, and the mechanism of silicon modification in aluminum silicon casting alloys is elucidated.
     这就从电子层次解释了稀土导致孪晶的事实 ,阐明了稀土在Al Si铸造合金中的变质机制
短句来源
     The hard core of the facet/non-facet transition hypothesis is that the nucleation of the eutectic Si crystal is restrained. The "poisoning" mechanism, the Zigzag model of twinning growth and the impurity induced twinning mechanism show the change of the growth mode of the eutectic Si crystals.
     "小面-非小面转变说"的核心是Si相的形核受到抑制,而"毒化"机制、Zigzag孪晶生长模型及杂质诱发孪晶机制揭示了变质时共晶Si晶体的生长行为。
短句来源
     The well accepted hypothesis on modification of the eutectic silicon in Al-Si cast alloy is the "impurity induced twinning" proposed by Lu and Hellawell.
     最为人们接受的硅的变质机理是Lu和Hellawell提出的杂质诱发孪晶假说。
短句来源
  相似匹配句对
     Induced into E.
     将表达载体转化E.
短句来源
     induced by collagen.
     以胶原为诱导剂 :清半夏 >羌活 >天冬 >苦楝皮 ;
短句来源
     Twinning Induced Plasticity at High Strain Rate for Austenitic Manganese Steel
     奥氏体锰钢高应变速率孪生诱导塑性
短句来源
     THE METAMORPHIC TWINNING OF PLAGIOCLASE
     斜长石的变生双晶
短句来源
     Twinning and Cerebral Palsy
     双胎与脑性瘫痪
短句来源
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  induced twinning
This suggests that impurity-induced twinning is probably not the mechanism responsible for the flake-to-fibrous transition observed in Ca-modified Al-Si-alloys.
      
Interestingly, it was noticed that the chip work hardened during the machining process due to strain-induced twinning and ? martensite transformation.
      
Discussion of "the mechanism of silicon modification in aluminum-silicon alloys: Impurity-induced twinning"
      
The mechanism of silicon modification in aluminum-silicon alloys: Impurity induced twinning
      
Stress induced twinning of polydiacetylene single crystal fibres in composites
      
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Two hundred and seventy multiparous Chinese Yellow cattle (beef) cows were selected at 1 to 3 months postpartum and divided into three groups (90 cows for each). Animals were given both a primary and a booster immunizations with a total dose of 3 mg (Group Th) or 1.5 mg (Group TI) of seminal preparation containing inhibin activity, emulsified with Freund's complete adjuvant and incomplete adjuvant (for booster), at 3 or 4 weeks intervals. Other cows were treated with same volume of seminal preparation without...

Two hundred and seventy multiparous Chinese Yellow cattle (beef) cows were selected at 1 to 3 months postpartum and divided into three groups (90 cows for each). Animals were given both a primary and a booster immunizations with a total dose of 3 mg (Group Th) or 1.5 mg (Group TI) of seminal preparation containing inhibin activity, emulsified with Freund's complete adjuvant and incomplete adjuvant (for booster), at 3 or 4 weeks intervals. Other cows were treated with same volume of seminal preparation without inhibin activity as procedures mentioned above to serve as a control (Group C). Artificial inseminations were given twice at 8 to 12 h intervals when the cow was in heat. Jugular venous blood samples were collected from each cow and used to assay the presence of antibody against seminal preparation by double diffusion in agar precipitation test and to detect the titer of inhibin antibody by an ELISA method. Data from 247 cows showed that 83.9% (73/87) of cows were in estrus and ovulated 89 ova altogether, of which 19 cows ovulated twin ova and 15 cows produced twins in group Th (n=87). However, only 61.l % (44/72) of cows in group Tl (n=72) and 62.5% (55/88) of cows in Group C were in estrus and ovulated 46 and 52 ova altogether respectively. The ovulation rate (l.27±0.03), calving rate (126.3%) and twinning rate (26.3%) in Group Th were greater than those in groups TI or C (P<0.0 1). Furthermore, the ovulation rate was associated with antibody titer in sera of immunized animals (r=0.7507, P<0. 01). These results indicate that active immunization of postpartum cows against inhibin purified from porcine seminal plasma may increase the ovulation rate and induce twinning, suggesting the potential to develop a method to improve fertility in cows.

2 70头经产母黄牛分成 3组 ,每组 90头 ,分别在产后 13个月用 2mg(Th组 )或 1mg(Tl组 )精液抑制素和福氏完全佐剂进行主动免疫 ,34周后进行加强免疫。加强免疫所用抑制素剂量减半 ,佐剂为福氏不完全剂。另一组牛用不含抑制素生物活性的精液提取物和上述佐剂进行主动免疫和加强免疫 ,用作对照组 (C组 )。母牛发情时 ,间隔 8 12h用冷冻精液进行人工授精。在主动免疫和加强免疫后 812d采集颈静脉血 ,收集血清 ,分别用双扩散凝胶沉淀法和酶联免疫吸附测定法测定抗抑制素抗体的效价。根据记录完整的 2 4 7头牛资料 ,发现Th组 87头母牛中有 73头(83.9% )发情 ,其中 5 1头排单卵 ,19头排双卵。妊娠期末 ,15头产双胎 (孪生 2 6 .3% ,15 / 5 7)。而在T1组 (72头 )和C组 (88头 )中 ,分别只有 4 4头 (6 1.1% )和 5 5头 (6 2 .5 % )母牛发情 :其中排双卵的母牛分别为 4头和 0。妊娠期末 ,孪生率分别为 3.1% (1/ 32 )和 0 (0 / 34)。分析血清抗体水平 ,证明排双卵的母牛血清抗抑制素水平显著高于排...

2 70头经产母黄牛分成 3组 ,每组 90头 ,分别在产后 13个月用 2mg(Th组 )或 1mg(Tl组 )精液抑制素和福氏完全佐剂进行主动免疫 ,34周后进行加强免疫。加强免疫所用抑制素剂量减半 ,佐剂为福氏不完全剂。另一组牛用不含抑制素生物活性的精液提取物和上述佐剂进行主动免疫和加强免疫 ,用作对照组 (C组 )。母牛发情时 ,间隔 8 12h用冷冻精液进行人工授精。在主动免疫和加强免疫后 812d采集颈静脉血 ,收集血清 ,分别用双扩散凝胶沉淀法和酶联免疫吸附测定法测定抗抑制素抗体的效价。根据记录完整的 2 4 7头牛资料 ,发现Th组 87头母牛中有 73头(83.9% )发情 ,其中 5 1头排单卵 ,19头排双卵。妊娠期末 ,15头产双胎 (孪生 2 6 .3% ,15 / 5 7)。而在T1组 (72头 )和C组 (88头 )中 ,分别只有 4 4头 (6 1.1% )和 5 5头 (6 2 .5 % )母牛发情 :其中排双卵的母牛分别为 4头和 0。妊娠期末 ,孪生率分别为 3.1% (1/ 32 )和 0 (0 / 34)。分析血清抗体水平 ,证明排双卵的母牛血清抗抑制素水平显著高于排单卵和不排卵的母牛 ,排卵数与抗抑制素抗体水平呈正相关 (r=0 .75 0 7,P <0 .0 1)。

The atom structure models of the eutectic Si phase (111) surface and (111) twin surface were set up by computer programming. Electronic structures of the eutectic Si phase (111) surface and (111) twin surface were investigated by the recursion method. The structure energy of rare earth atom at Si (111) twin surface is larger obviously than that of rare earth atom at Si (111) surface, which shows that rare earth atom is easy to occupy the sites at Si (111) twin surface. The small E ESE of rare earth...

The atom structure models of the eutectic Si phase (111) surface and (111) twin surface were set up by computer programming. Electronic structures of the eutectic Si phase (111) surface and (111) twin surface were investigated by the recursion method. The structure energy of rare earth atom at Si (111) twin surface is larger obviously than that of rare earth atom at Si (111) surface, which shows that rare earth atom is easy to occupy the sites at Si (111) twin surface. The small E ESE of rare earth atom at Si (111) twin surface relative to Si (111) surface shows that rare earth atom is more stable to be in the surface of Si (111) twin, and calculations of bond order integrals (BOIs) also show that rare earth atom is stable to occupy the sites at Si (111) twin surface. All these explain the fact of rare earth elements induced twinning from electronic level, and the mechanism of silicon modification in aluminum silicon casting alloys is elucidated.

通过计算机编程构造出了Al Si铸造合金中Si(金刚石结构 )相 ( 111)表面及稀土导致的 ( 111)孪晶表面的原子结构模型 ,利用连分数方法计算了稀土处于表面及孪晶表面这两种位置时的电子结构。稀土原子处于孪晶表面时的结构能明显比处于Si( 111)表面大 ,说明稀土原子容易占据孪晶表面的位置 ;稀土原子处于孪晶界时的环境敏感镶嵌能比处于表面小 ,说明稀土处于孪晶表面时比较稳定 ,同时原子间的键级积分计算也表明稀土能够占据孪晶表面的位置且在此处较稳定。这就从电子层次解释了稀土导致孪晶的事实 ,阐明了稀土在Al Si铸造合金中的变质机制

With studying on the eutectic Si modification, many new evidences were found one after the other and hence some new mechanisms were put forward. There are two principal mechanisms: the nucleation theory and the growth theory. The hard core of the facet/non-facet transition hypothesis is that the nucleation of the eutectic Si crystal is restrained. The "poisoning" mechanism, the Zigzag model of twinning growth and the impurity induced twinning mechanism show the change of the growth mode of the eutectic...

With studying on the eutectic Si modification, many new evidences were found one after the other and hence some new mechanisms were put forward. There are two principal mechanisms: the nucleation theory and the growth theory. The hard core of the facet/non-facet transition hypothesis is that the nucleation of the eutectic Si crystal is restrained. The "poisoning" mechanism, the Zigzag model of twinning growth and the impurity induced twinning mechanism show the change of the growth mode of the eutectic Si crystals. The development on the modification mechanism was reviewed in the present paper.

随着对共晶Si变质机理的深入研究,相继发现了一些新的证据,提出了一些新的假说。共晶Si的变质机理主要存在两种:形核理论和生长理论。"小面-非小面转变说"的核心是Si相的形核受到抑制,而"毒化"机制、Zigzag孪晶生长模型及杂质诱发孪晶机制揭示了变质时共晶Si晶体的生长行为。文中对共晶Si的变质机理研究进展进行了综述。

 
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