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视觉
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  vision
    A MATHEMATICAL MODEL OF PRIMARY INFORMATION PROCESSING IN VISION SYSTEM OF VERTEBRATE (Ⅱ)TEMPORAL PROPERTIES OF THE MODEL
    视觉系统初级信息加工的一种数学模型——(Ⅱ)模型的时间特性
短句来源
    A TIME-VARYING BANDPASS FILTERING MODEL FOR PRIMARY INFORMATION PROCESSING IN VISION SYSTEM
    视觉系统初级信息处理的时变通带滤波模型
短句来源
    Reaction of Color Vision to Spatial Frequency and Pattern Recognition
    颜色视觉对空间频率反应及图形识别
短句来源
    WAVELET-BASED PRIMAL VISION MODEL WITH SELECTIVE ATTENTION MECHANISM
    基于小波的具有选择性注意力机制的初级视觉模型
短句来源
    Man - Machine Problems in Designing the Vision Information Transmission System
    视觉信息传递系统设计的人机学问题
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  visual
    Biphasic Visual Temporal Impulse Response and Optokinetic Nystagmus
    双相视觉脉冲反应与Optokinetic Nystagmus(OKN)眼动
短句来源
    The Ultrastructure of Visual Cells, Visual Pathways, and fMRI Studies of Visual and Somatosensory Stimulation-related Cortical Activation
    视觉细胞的超微结构及传导与视觉、躯体感觉刺激相关的皮层激活fMRI实验研究
短句来源
    1.Dopamine System is Involved in the Visual Attention-like Behavior in Drosophila 2.Calcium-influx-dependent Spontaneous Calcium Transients in the Eye-disc of the Drosophila Larvae
    1,多巴胺系统在果蝇视觉类注意行为中的作用 2,果蝇幼虫眼盘瞬时钙升高及其机制的研究
短句来源
    Role of Aquaporin Water Channel in Mouse Hearing and Visual Physiology
    水通道蛋白在小鼠听觉与视觉生理中的作用
短句来源
    SOME CHARACTERISTICS OF SINGLE CELL RESPONSE OF AREA 17 OF CAT VISUAL CORTEX TO GRATING PATTERNS
    猫皮层17区细胞对栅形视觉刺激反应的某些特性
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  “视觉”译为未确定词的双语例句
    Tbe Characteristics of Optomotor Reaction of Young nile Tilapia (Tilapia nilotica)
    尼罗罗非鱼(Tilapia nilotica)视觉运动反应的特点
短句来源
    THE OPTOMOTOR REACTION OF CRUCIAN CARP (CARASSIUS AURATUS)
    鲫鱼(Carassius auratus)视觉运动反应特性的研究
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    A NEURAL NETWORK SIMULATING VISNAL AMBIGUOUS FIGURE
    一个模拟视觉交变现象的神经网络
短句来源
    UNSUAL ORIENTATION TUNING CURVE OF LGNd RELAY CELLS IN THE CAT: Ⅱ.STUDIES IN DECORTICATE CATS AND DARK-REARED CATS
    猫外膝体神经元非寻常的方位调谐特性──Ⅱ.在去视皮层猫和视觉剥夺猫(Dark-reared cats)的研究
短句来源
    TOP-DOWN INFORMATION PROCESSING IN COGNITION EYE MOVEMENTS
    视觉图像辨认眼动中的Top-down信息处理
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  vision
Geometric Fourier Analysis for Computational Vision
      
The recognition of 3-D objects is quite a difficult task for computer vision systems.
      
Due to these favorable characteristics, the processed images turn much clearer and smoother, meanwhile, their significant details are kept, which results in appealing vision.
      
Although computer stereo vision techniques for collecting parameters of a single stem shape are comparative, complicated, and expensive, research indicates the efficiently and feasibility of close-range photogrammetry for stem image information.
      
Methods of computer vision, image processing and wavelet analysis technology were used to compress, filter, segment, abate noise and capture the outline of the picture.
      
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  visual
A simulated example is also given to show the visual performance of the estimations.
      
The copolyimides were characterized by Infra-red (IR), Nuclear Magnetic Resonance (NMR), Gel Permeation Chromatography (GPC), Ultraviolet Visual (UV-Vis), Thermogravimetic Analysis (TGA) and Dynamic Mechanical Analysis (DMA).
      
By using Visual C++ programming to simulate the performance, the result indicates that when code length N = 3,072 and code rate R = 1/3, the difference with the Shannon limit is about 2 dB.
      
The purpose of this paper is to improve the performance and robustness of VAD by introducing visual information.
      
Meanwhile, data-driven linear transformation is adopted in visual feature extraction, and a general statistical VAD model is designed.
      
更多          


Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als...

Wir untersuchten die kapillare Dichtigkeit an 6 Aeren der Grosshirnrinde.Die Materialien bestanden aus 6 Gehirnen von Kindern im Alter von 1—2 und 5 Jahren und 2 Gehirnen von Hunden. Diesen 8 Gehirnen injezierten wir Gelatinetusche,bzw.25% Argyrol. 1 Die Kapillaren der Grosshirnrinde und des -markes bildeten zusammen ein dichtes,mitein- ander verbundenes Netz.Die Netzmaschen in der Grosshirnrinde waren enger als diejenigen des Grosshirnmarkes. 2 Die kapillare Dichtigkeit in der Grosshirnrinde war groesser als jene des Markes.Die dur- chschnittliche kapillare Laenge von 6 Grosshirnrindschichten war 3,26:1 im Verhaeltnis zu der Laenge des Grosshirnmarkes.Die an Gefaessmenge mangelnde 1.Schicht besass eine kapillare Laenge,zweimal groesser als die des Markes. 3.Die kapillare Dichtigkeit zwischen 6 Schichten der Grosshirnrinde war ganz verschieden; die 4.Schicht war am staerksten,die 1.Schicht am schwaechsten. 4.Die Blutgefaessverteilung in den 6 Aeren der Grosshirnrinde war im motorischen Rinden- feld am reichsten;im sensiblen Rindenfeld,Schzenrum,Hoerzentrum,frontalem Pole und Riechzen- trum nahm sie stufenweise ab.Dies bedeutet,dass die Blutversorgung des Paloccortex am aermsten war.Dort wo die Nerventaetigkeit am kompliziertesten war,waren die Blutgefaess verteilung relativ reicher.

在6个一至二岁半的童尸和2只狗上用墨汁明胶注射观察了6个大脑皮质分析器核心部的血管密度。1.大脑皮质和髓质的毛细血管形成一个互相紧密联系着的血管网。皮质血管网的网眼比髓质的稠密。2.皮质的毛细血管密度比髓质的大,皮质6层中的毛细血管平均长度与同火面积的髓质毛细血管长度之比为3.26:1。皮质6层中血管量最少的第J层也比髓质的多一倍。3.大脑皮质各层的毛细血管密度不同,在中央前回中,以第Ⅲ、Ⅳ层的血管为最密,最贫乏的是第Ⅰ层。4.大脑皮质6区中以运动分析器核心部的血管密度最大,而感觉分析器、视觉分析器、听觉分析器、额极附近及嗅觉分析器的核心部的血管密度依次减少。这说明旧皮质的血液供给较贫乏,而功能愈繁复的地方,血管亦愈丰富。

Making use of a dichroic filter type anomaloscope,the ratio and the range of vatiation of red to green light in matching for yellow were Studied in 220 sub jectS(146 males,74 females) with no acquired diseases of COlour vision. of the 220 cases,207 are normal. The statistical properties of the distribution of their R/G ratios were analyzed,assuming a normal distribution.The rest,13 cases, constituting a total of 6% COlour defectives of the sample, consist of 3 protans,3 deutans,1 protanomal,2 deuteranomals and...

Making use of a dichroic filter type anomaloscope,the ratio and the range of vatiation of red to green light in matching for yellow were Studied in 220 sub jectS(146 males,74 females) with no acquired diseases of COlour vision. of the 220 cases,207 are normal. The statistical properties of the distribution of their R/G ratios were analyzed,assuming a normal distribution.The rest,13 cases, constituting a total of 6% COlour defectives of the sample, consist of 3 protans,3 deutans,1 protanomal,2 deuteranomals and 4 extreme deuteranomals. The relative spectral sensitivity cur、vewas determined for 6 of the 7 anomalous trichromats and also for 5 normals. 2 protansand 2 deutans for the purpose of comparison. As an additional qualitative test,the ability of all subjects to tead the pseudo-isOChromatic plates (Ishihara,15 ed.) was also noted. on the basis of a correlated consideration of the present expental findings, the ways by which anomalous trichromatism might come into being were discussed in light of the prpoposal of Roshton regarding the cone pigment trans fomation from normal to dichromats. In order to account for certain behaviour of anomalous trichromats. it has been argued that,in addition to those types inVOlving a pigment transformation,as inthe case of dichromats,of only a proportion of the cell population,some cases probablyinVOlVC an abnormal formation of certain Digments which are not present in either the"red" or the "gteen" system. This abnormal pigment probably represents a certain inter mediate between that of P_(54) and (2P_(54)+3P_(59),thus accounting for a preferential settingof R/G ratio to certain values. In those cases of anomalous trichromat with little or noeviation of the mean value Of R/G ratio from normal but with mederately enlargedatching range,it is likcly that both the "red" and the "green" systems are affected tosome extent so as to make their spectral sensitivity curves approximately equal Therere,besides,even more complicated cases. The 6 anomalous trichromats are thus eterogenous group, DrObably reouiring different explanation for different cases.

利用滤光片型测异仪,对220名(男146,女74)受试者进行了比配黄光所需的红光和绿光的相对量及其变动范围的测定。220例中,207例色觉正常,对他们R/G比值的统计学特性加以分析,假设其分布是正态的。其余13例,占总检查人数的6%,包括甲型色盲3人,乙型色盲3人,甲型异常三色觉者1人,乙型异常三色觉者2人和极端乙型异常三色觉者4人。7名异常三色觉者中的6名的相对光谱亮度曲线曾群加测定。此外,我们还测定了5名正常人,2名甲型色盲和2名乙型色盲的相对光谱亮度曲线,以资此较。同时,所有的受试者还阅读了假等色图谱(Ishihara 15版),作为一种衡量其色分辨能力的定性检查。从我们实验结果的相关考虑,同时根据Rushton对圆锥细胞色素从正常人的分布过渡到二色觉者的分布的建议,对异常三色觉的形成原因进行了探讨。为了解释异常三色觉者的某些视功能表现,除了由一个系统一部分细胞的视色素轉变到另一个系统的视色素而产生的异常三色觉之外,另外一些例子可能是由于形成某些异常的色素而引起的,这种异常的色素既不存在于正常“红”系统中,也不存在于正常“绿”系统中,可能是P_(54)和(2P_(54)+3P_(59))两色素轉变过程中...

利用滤光片型测异仪,对220名(男146,女74)受试者进行了比配黄光所需的红光和绿光的相对量及其变动范围的测定。220例中,207例色觉正常,对他们R/G比值的统计学特性加以分析,假设其分布是正态的。其余13例,占总检查人数的6%,包括甲型色盲3人,乙型色盲3人,甲型异常三色觉者1人,乙型异常三色觉者2人和极端乙型异常三色觉者4人。7名异常三色觉者中的6名的相对光谱亮度曲线曾群加测定。此外,我们还测定了5名正常人,2名甲型色盲和2名乙型色盲的相对光谱亮度曲线,以资此较。同时,所有的受试者还阅读了假等色图谱(Ishihara 15版),作为一种衡量其色分辨能力的定性检查。从我们实验结果的相关考虑,同时根据Rushton对圆锥细胞色素从正常人的分布过渡到二色觉者的分布的建议,对异常三色觉的形成原因进行了探讨。为了解释异常三色觉者的某些视功能表现,除了由一个系统一部分细胞的视色素轉变到另一个系统的视色素而产生的异常三色觉之外,另外一些例子可能是由于形成某些异常的色素而引起的,这种异常的色素既不存在于正常“红”系统中,也不存在于正常“绿”系统中,可能是P_(54)和(2P_(54)+3P_(59))两色素轉变过程中停留在中间状态的一种色素。这个假设也可以解释为什么在简单异常三色觉羣里,R/G比值容易处于某些数值。对平均R/G比值与正常人相差很小但此配范围又较大的异常三色觉者,可能的解释是他们的“红”系统和“绿”系统的色素在某种程度上相互轉变,两个系统的吸收光谱相互接近。此外,还有一些更复杂的例子,须要一个以上的形成原因来解释他们的视觉现象。

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。 从化蛹后第九天起至成虫...

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?

 
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