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纤维区
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  fibre zone
     Fracture analysis indicates that the width of plastic fibre zone reduced from 1.7mm to 0.4mm as the temperature fell from 20 ℃ above zero to 60 ℃ below zero.
     冲击断口分析表明,温度从20℃降低到-60℃,断口塑性纤维区宽度由1.7mm减少到0.4mm。
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  “纤维区”译为未确定词的双语例句
     RESEARCH ON RADIATION-BIOLOGY EFFECTS OF  ̄3H(Ⅳ)EFFECT OF HTO ON NUCLEOLAR FIBROUS CORE OF CHLAMYDOMONAS REINHARDTII DANGEARD
     ~3H的辐射生物学效应的研究(Ⅳ)HTO对莱哈衣藻(Chlamydomonas reinhardtii Dangeard)核仁纤维区超微结构的影响
短句来源
     It is also found that Mg reacts with Al and SiO 2, resulting in the formation of spinel(MgAl 2O 4), hence depleting Mg in the matrix and finally hindering the ageing acceleration in the testing composite.
     这是由于Mg元素在纤维 /基体界面处发生了界面反应 ,生成镁铝尖晶石 (MgAl2 O4 ) ,使复合材料中非纤维区内实际Mg含量降低所致。
短句来源
     At 20 ℃,the radial region is a mixture of cavitation and cleavage fracture and at 20 ℃and 0 ℃ the micro-cracks could be observed in radial region and fibrous region,respectively.
     20℃放射区断口呈现韧性断裂和解理断裂共存的混合型断口,并且试验温度为20℃和0℃时,分别在放射区和纤维区可观察到微观裂纹;
短句来源
     ULTRASTRURE AND THREE-DIMENSIONAL RECONSTRUCTION OF NUCLEOLAR FIBROUS CORE OF Chlamydomonas reinhardtii Dangeard (CrD)
     莱哈衣藻(Chlamydomonas reinhardtii Dangeard)细胞核仁纤维区的超微结构及三维重建
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     Up to now, however, there is no evidence that the nucleomorph contains basic protein and acidic protein which usually presents in a nucleolus. Function of the nuclcomorph is also lefted to be verified. 4'-6-diamidino-2-phenylindole (DAPI), Uranyl acetate-EDTA-Lead, AS and Ag-NOR stains were used in our cytochemical studies on the nucleomorph of Cryptomonas zhanjiangis.
     我们用4-6-diamidino-2-phenylindole(DAPI)荧光染色法、Uranyl acetate-EDTA-Lead染色法、碳酸氨银染色法(AS)和特异性显示核仁纤维区酸性蛋白的Ag-NOR银染法,分别在光镜和电镜下对湛江隐藻(Cryptomonas zhanjianagis Hu et Li)进行了核形体细胞化学的研究。
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  相似匹配句对
     THE AFFERENT CONNECTIONS OF THE CINGULATE AREAS
     扣带的传入纤维联系
短句来源
     Fiber Connection of Field L of Sparrows
     麻雀端脑听纤维联系
短句来源
     fibre trachieds;
     纤维管胞;
短句来源
     AROMATIC POLYAMIDE FIBER
     芳香族聚酰胺纤维
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     Culture Region
     文化
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  pars fibrosa
The reaction product of ATPase was found especially in the "Pars fibrosa" of the nucleoli and also at the chromatin fibrils in the remainder of the nucleus.
      
With increased EDTA extraction times (60-90 sec) the central region (composed of pars fibrosa) in spontaneously or experimentally segregated nucleoli showed the highest capacity for retaining uranyl ions.
      
The results show a transposition of label from the pars fibrosa to the pars granulosa of the nucleolus.
      
Under the electron microscope the central region appears as consisting of fibrillar elements (pars fibrosa), while the peripheral region proved to consist mainly of granules about 150 ? in diameter (pars granulosa).
      
Under the electron microscope, it was observed that all the silver grains were concentrated in the pars fibrosa of the nucleolus.
      
  fibre zone
Around 11000 white focally innervated twitch fibres lie beneath the red fibre zone.
      
Kv1.1 was more prominently expressed in the mossy fibre zone of CA3, where Kv1.2 is absent, and in the stratum radiatum and oriens of CA1.
      


In the present paper, the transformation of the larval central nervous system intothat of the adult, and the activity of cholinesterase in the brain of Philosamid cynthiaricini during metamorphosis are described. The central nervous system during the larval stage of Philosamia cynthia ricini con-sists of a cerebral ganglion, a suboesophageal ganglion, three thoracic ganglia and eightabdominal ganglia. The connectives between suboesophageal and the first thoracic gangliaare short and thick, have these two ganglia...

In the present paper, the transformation of the larval central nervous system intothat of the adult, and the activity of cholinesterase in the brain of Philosamid cynthiaricini during metamorphosis are described. The central nervous system during the larval stage of Philosamia cynthia ricini con-sists of a cerebral ganglion, a suboesophageal ganglion, three thoracic ganglia and eightabdominal ganglia. The connectives between suboesophageal and the first thoracic gangliaare short and thick, have these two ganglia lie very close together. The three thoracicganglia and the 1st to 7th abdominal ganglia lie near the middle of the segments, withtheir interganglionic connectives almost equal in length. The 7th and 8th abdominal ganglia lie very close together; and the 8th abdominal ganglion actually lies within the7th abdominal segment. When the insect enters the prepual stage the connectives between the ganglia shortenconsiderably and the total length of the nerve cord is approximately reduced by one-third. A series of macro-anatomical changes in nerve cord and structural changes in brainoccur during the pupal stage. During metamorphosis, the brain gradually increase in sizewith the growth of the proto- deuto- and tritocerebrum. The connectives between thesuboesophageal and 1st thoracic ganglia lengthen. The suboesophageal ganglion assumesa more anterior position, eventually lying immediately ventral to, and actually fusing to-gether with the brain. The connectives between the 1st and 2nd thoracic ganglia some-what shorten and the mesothoracic ganglion moves anteriorly and close to the 1st thoracicganglion. The connectives between the 2nd and 3rd thoracic ganglia shorten, and de-generate gradually approaching the adult stage. The 1st and 2nd abdominal gangliamoves forward and fuse with the 3rd thoracic ganglion to form a large metathoracicganglion, while the 6th meets the contiguous 7th and 8th abdominal ganglia to form alarge compound last abdominal ganglion. In the result of shortening of the inter-ganglionic connectives and the fusion of ganglia, the whole nerve cord appears muchshorter. Only four abdominal ganglia remain during the adult stage. Concerning the inner structure of the brain a very great difference is noted betweenthe larva and the imago of this insect. The central body and the stalks of the mushroombodies appear and develop in size and differentiation during the larval stage and theoptic centers have begun their development as big imaginal discs. But the pons cere-bralis and the glomeruli olfactorii are not yet visible even in the fullgrown larva. Thestructures of the brain become more complicated during the metamorphosis. Regardingthe inner structure, the most noticeable differences are shown by the optic lobes. In thisregion, the imaginal discs give origin to the complicated optic centers of the adult. Thelamina ganglionaris, medulla externa and medulla interna are differentiated from theimaginal discs gradually during metamorphosis. The pons cerbralis, glomeruli olfactorii,corpus ventrale appear as the process of metamorphosis proceeds, and the interveningchiasmata of optic center and the mushroom body are also well organized in the 9th-daypupa. The activity of cholinesterase in the brain is lower at the beginning of prepupal stageand higher while appraoching adult emergence. The cholinesterase activity correspondedto 0.078 μm of acetyl choline hydrolyzed per mg of brain in half an hour at the prepupalstage, and to 0.485 μm at the end of pupal stage. The cholinesterase activity in brainincreases about 6-fold during metamorphosis. It is assumed that in the insect withoutdiapause like the Eri-silkworm the activity of cholinesterase in brain during the processof metamorphosis would increase gradually without any interruption as the time proceeds.This phenomenon is in contrast to that in the diapausing cecropia silkworm, in which aninterruption of cholinesterase activity occurs during diapause (van der Kloot 1955).

蓖麻蚕在变态期间,脑及腹神经索产生了一系列的变化。脑外部形态的显著变化是体积的增大,视叶的出现及脑与食管下神经节的愈合。由幼虫上簇开始至成虫羽化,共约19天。在此期间,脑的宽度由0.93毫米增至2.48毫米。视叶出现于幼虫上簇后第四天,即化蛹前一天;发育至化蛹后第七天,食管下神经节完全与脑愈合成环状。幼虫脑组织比较简单,视叶尚未显明分化,只是在脑的两侧前方有成团的神经细胞聚合而成的“原基”,成虫视叶组织即由这些原基分化而来。蕈体尚不完整,仅蕈体柄显明。化蛹后,视觉中枢的三个纤维区——神经节层,外髓和内髓——都已出现,中心体也清楚可见。化蛹后第九天,视叶的三个纤维区之间的交叉纤维显明地出现,其它各部分如中心体、脑桥体、腹体及嗅觉中枢都完全分化出来。脑构造的复杂化也明显表现在内部组织的分化上。 腹神经索的变化主要是缩短和神经节的合并。最显著的缩短阶段是在预蛹期,整条神经索由原来的43毫来缩短为29毫米。食管下神经节与脑愈合,腹部第一二神经节并入后胸神经节,第六、七、八神经节合并成一大型的复合神经节,这样便由原来的八个腹神经节减少了一半。胸部三个神经节则因菱形区的消失而互相靠拢。 从化蛹后第...

蓖麻蚕在变态期间,脑及腹神经索产生了一系列的变化。脑外部形态的显著变化是体积的增大,视叶的出现及脑与食管下神经节的愈合。由幼虫上簇开始至成虫羽化,共约19天。在此期间,脑的宽度由0.93毫米增至2.48毫米。视叶出现于幼虫上簇后第四天,即化蛹前一天;发育至化蛹后第七天,食管下神经节完全与脑愈合成环状。幼虫脑组织比较简单,视叶尚未显明分化,只是在脑的两侧前方有成团的神经细胞聚合而成的“原基”,成虫视叶组织即由这些原基分化而来。蕈体尚不完整,仅蕈体柄显明。化蛹后,视觉中枢的三个纤维区——神经节层,外髓和内髓——都已出现,中心体也清楚可见。化蛹后第九天,视叶的三个纤维区之间的交叉纤维显明地出现,其它各部分如中心体、脑桥体、腹体及嗅觉中枢都完全分化出来。脑构造的复杂化也明显表现在内部组织的分化上。 腹神经索的变化主要是缩短和神经节的合并。最显著的缩短阶段是在预蛹期,整条神经索由原来的43毫来缩短为29毫米。食管下神经节与脑愈合,腹部第一二神经节并入后胸神经节,第六、七、八神经节合并成一大型的复合神经节,这样便由原来的八个腹神经节减少了一半。胸部三个神经节则因菱形区的消失而互相靠拢。 从化蛹后第九天起至成虫羽化,除了脑的体积稍有增大以外,整个中枢神经系统?

On the basis of analyzing yield way of necking tensile specimen this paper gives the approximate law to estimate the J integral value from tersile data: J = ak(a/b, m)ηI and rough approximate law to count the size of fibrous zone and the size of shear lip zone in a fracture suface of tensile specimen:

本文在分析拉伸试样发生缩颈时的屈服方式的基础上,给出由拉伸数据估算J积分值的近似公式:J=ak(a/b,m)ηI;并给出计算拉伸断口的纤维区尺寸、剪切唇尺寸的粗略的近似公式: 2a/d≈(n+3.87/n~2+7.74n+14.17)ψ+0.05和ψ≈((n′)~2+2n′+0.3)/(n′+1)(S/(d/2+0.77)

Observing the deformation structure and dislocation density beneath the fracture surface byelectron-fracto-microscopy in combination with impact load-time curve obtained by oscillography, theeffect of sulfide morphology on fracture behavior of 16Mn steel has been investigated and resultedin disconsistence of fracture morphology with toughness of material. The fractures of 16Mn steel with and without rare earth elements have been compared. 16Mnsteel without rare earth elements has a woody fracture, It belongs...

Observing the deformation structure and dislocation density beneath the fracture surface byelectron-fracto-microscopy in combination with impact load-time curve obtained by oscillography, theeffect of sulfide morphology on fracture behavior of 16Mn steel has been investigated and resultedin disconsistence of fracture morphology with toughness of material. The fractures of 16Mn steel with and without rare earth elements have been compared. 16Mnsteel without rare earth elements has a woody fracture, It belongs to brittle ftacture mechanismswhere breaking takes place along the interfaces of sulfide and no visible three basic elements offracture have been found. 16Mn steel containing rare earth elements has a crystalline fracture wherethe radial zone consisting of crystalline particles appears as quasi-cleavage fracture machanism, andthe three basic elements of fracture can be observed clearly. Due to the fact that fracture naturecannot be reflected obviously by macro-morphology of fracture, it should be determined by the ratiobetween areas of the fibrous zone and the shear lip combined with micro-fracture mechanisms.

本文通过电镜观察了断口断裂面变形组织和位错密度,并结合示波冲击负荷-时间曲线,研究了硫化物形态对16Mn钢板断裂行为的影响。这种影响是造成断口形貌与材料韧性不一致的原因。不加稀土16Mn钢宏观断口呈木纹状,无明显断口三要素,微观形貌为沿长条状硫化物界面断裂的脆性断裂机制。加稀土16Mn钢宏观断口多呈结晶状,有明显的断口三要素,放射区结晶颗粒的微观形态属准解理断裂机制。因此单凭宏观断口形貌是不能真实地反映断裂本质,而需结合断口的微观机制、根据断口三要素中纤维区和剪切唇所占比例来判断。

 
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