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  a型
     Elephantopus tomentosus 2n=22=22m(4sat),1A type.
     白花地胆草2n=22=22m(4sat),1A型
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     Eupatorium odoratwn 2n=60=46m+14sm(2sat),2A type;
     飞机草2n=60=46m+14sm(2sat),2A型
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     Bidens pilosa ( white flower) 2n=72=40m (2sat) +32sm(4sat),2A type;
     三叶鬼针草(白花)2n=72=40m(2sat)+32sm(4sat),2A型
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     Eclipta prostrata 2n=22=18m+4sm,1A type;
     鲤肠2n=22=18m+4sm,1A型
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     'Duet' 2n = 4x = 28 = 28m, 1A type ;
     ‘二重奏’(‘Duet’)2n=4x=28=28m,核型为1A型;
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  一类
     Stability of a Type of SI_1I_2R_1R_2 Epidemic Model
     一类SI_1I_2R_1R_2传染病模型的平衡解的稳定性
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     Optimal Control of a Type of M/G/1 Queueing System
     一类M/G/1排队系统的最优控制
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     This paper discusses a type of damped Gross-Pitaevskii(GP) equation(also called as nonlinear Schrdinger equation with harmonic potential) appearing in attractive Bose-Einstein condensates iφ_t+△φ-|x|~2φ+|φ|~2φ+iλφ=0,where t≥0,x∈R~2,λ is the damping parameter.
     讨论出现在吸引玻色-爱因斯坦凝聚中的一类阻尼Gross-Pitaevskii(GP)方程(在数学上又称为带调和势的阻尼非线性Schr dinger方程)iφt+△φ-|x|2φ+|φ|2φ+iλφ=0,其中t≥0,x∈R2,λ是阻尼参数.
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     The Dimension of Spline Space S_3~1(Δ) on a Type of Triangulation
     一类三角剖分下样条空间S_3~1(Δ)维数
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     When A+λB+μC is a type of matrixes ,we can find λ=λ *,μ=μ * by constructing the expanded regular system of the equations to let the rank of A+λ *B+μ *C be n-2.
     对一类矩阵族 A+ λB+ μC的特征值问题作了一般性讨论 ,用构造扩大方程组的方法求 λ=λ*,μ=μ*,使得 A+ λ*B+ μ*C的秩为 n- 2 .
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  一种
     Research on a Type of Cooperative CAPP System
     一种协同式CAPP系统的研究
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     Concerning a Computational Formula for a Type of Discrete Multiple Convolutions with Applications
     论一种离散型多重卷积的计算公式及其应用
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     Analysis of the Control Circuits for A Type of Frequency-Locked Signal Sources
     一种频率锁定式信号源的控制电路的分析
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     A TYPE OF SEMANTIC NETWORK
     一种语义网络
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     A Type of Tumour Radiotherapy Equipment Suitable for Popularization -BJ-4 Small Model Standing Wave Accelerator
     一种适于普及的肿瘤放疗设备——介绍BJ—4小型驻波加速器
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  某型
     Application of XM -17A non-drying putty in a type of aircraft
     XM-17A不干性腻子的选用及在某型飞机上的应用
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     Reliability Analysis for a Type of Hall Magnet Sensing Units
     某型Hall磁敏元件的可靠性分析
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     Automatic Test System of a Type Torpedo on the base of VXI Bus
     基于VXI总线的某型鱼雷自动检测系统
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     Structural Analysis of a type of Liquid Floated dynamically Gyroscope Floater based on ANSYS
     基于ANSYS的某型液浮动力陀螺仪浮子结构分析
     Analysis and Control of Steady Noise from A Type of Tracked Vehicle
     某型履带车辆稳态噪声的分析与控制
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      a type
    Organic materials of D-π-A type MR-X (MR-1: p-dimethylaminophenylethenetrica-rbonitrile and MR-2: p-diphenylaminophenylethene tricarbonitrile) were designed and synthesized.
          
    The electromagnetic fields in the cavity are a type of standing wave in the ELF band and the variation of the amplitude versus frequency coincides with Schumann's resonance.
          
    Chinese fir (Cunninghamia lanceolata), a type of subtropical fast-growing conifer tree, is widely distributed in South China.
          
    Its advantage is that one can describe the diffraction and interference of atoms passing through slits (or grating), apertures, and standing wave laser field in Earth's gravitational field by using a type of wave function and calculation is simple.
          
    A type of exfoliated kaolinite was produced by urea-intercalation and original microwave irradiation assisted method.
          
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    The radiative capture of μ-meson by proton is treated by using the renor-malized universal Fermi interaction of V-A type and Zeldowich's theory of μ mesic hydrogen. Contrary to the result of Lee, Huang and Yang, it is found that, if the effect of the strong interaction is neglected, then it is impossible for photon being emitted during the capture. The influence of the strong interaction consists of two respects, namely: the effect of the magnetic moment of the nucleon and the renormalization effect on...

    The radiative capture of μ-meson by proton is treated by using the renor-malized universal Fermi interaction of V-A type and Zeldowich's theory of μ mesic hydrogen. Contrary to the result of Lee, Huang and Yang, it is found that, if the effect of the strong interaction is neglected, then it is impossible for photon being emitted during the capture. The influence of the strong interaction consists of two respects, namely: the effect of the magnetic moment of the nucleon and the renormalization effect on the universal Fermi weak interaction. The effect of the anomalous magnetic moment is negligible. However, the contribution of proton to the emission of photon is not at all small in comparison with that of the μ-meson duo to the renormalization effect on the universal Fermi weak interaction. As a result, the photons emitted are no longer 100% right hand polarized. It is estimated, that only 80% of the photons has a spin parallel to its momentum. The radiative capture rate of the μ-meson by proton is 1/(1.6×105) of the

    本文利用重正化了的费米型V-A弱相互作用计算μ介子被质子吸收时所产生的辐射俘获现象。在计算中利用了余列多维奇等所指出的μ介子在俘获前停留在K层的单重态上的理论结果。计算的结果与李政道等忽略强相互作用的影响及忽略μ介子原子由三重态至单态的跃迁所得到的结果有很大的不同。我们得到当完全不考虑强相互作用的影响时μ介子被质子俘获时不能放出γ辐射的结论。其次我们考虑了两方面的强相互作用影响,一方面考虑了核子反常磁矩的影响,另一方面又考虑了强相互作用对V-A弱相互作用的重正化效应。计算结果指出:反常磁矩的贡献只为重正化效应的5%左右。由重正化效应所产生的辐射俘获几率只有李政道等所给出的几率的14%,放出的光子不再是100%右旋的,估计约有20%的左旋光子。

    The relative probability of the radioative decay of π-meson to that of π-μ decay is calculated, assuming a universal Fermi interaction of V-A type. Terms in addition to those of usual gauge invariant treatment are calculated with perturbation theory. The result does not contradict the experiment.

    本文应用V-A型普适费米弱作用由协变性和规范不变性的考虑,利用微扰论,计算了π介子辐射衰变的分枝比。

    In order to study the distribution of the virus entities which cause“Kwuting”symptomsof Chinese cabbage on various cruciferous crop plants,diseased specimens were collected fromPeking and Tientsin throughout the growing season in 1962.Isolations and routine diagnosiswere made during 1962-63.On basis of the differential host reactions,109 isolates weregrouped into seven types,among which types Ⅰ,Ⅱ and Ⅲ being reacted with K_1 (TurnipMosaic Virus) antiserum were thus considered to be related strains.These strains...

    In order to study the distribution of the virus entities which cause“Kwuting”symptomsof Chinese cabbage on various cruciferous crop plants,diseased specimens were collected fromPeking and Tientsin throughout the growing season in 1962.Isolations and routine diagnosiswere made during 1962-63.On basis of the differential host reactions,109 isolates weregrouped into seven types,among which types Ⅰ,Ⅱ and Ⅲ being reacted with K_1 (TurnipMosaic Virus) antiserum were thus considered to be related strains.These strains were de-signated K_(1-2) for type Ⅰ,K_(1-3) for type Ⅱ and K_(1-4) for type Ⅲ.Type Ⅰ neither infectedNicotiana tabacum nor N.glutinosa.Type Ⅱ did infect N.tabacum causing local lesions,butnot N.glutinosa.Type Ⅲ with its T.D.P.slightly higher than 65℃ did infect N.glutinosacausing local lesions,but might or not infect N.tabacum.Type Ⅳ being identical to theKwuting Virus 1 (A type strain of Turnip Mosaic Virus on Chinese cabbage) was designatedK_(1-1).Types Ⅴ and Ⅵ had not yet been identified,while type Ⅶ was identical to the former-ly reported virus K_3 (A ringspot strain of TMV).In fields,types Ⅰ and Ⅱ occurred more frequently.They were 59.0 and 32.0 per cent ofthe total isolates respectively.Type Ⅲ was apparently less prevalent (5.5 percent) and theother types occurred more rarely (less than 0.9 percent each).Therefore the two TurnipMosaic Virus strains K_(1-2) and K_(1-3) were the most prevalent and responsible for the epiphyto-tics of the Kwuting disease of Chinese cabbage in 1962.However,in Peking K_(1-2) was lessabundant than K_(1-3),while in Tientsin the condition was quite the reverse.The difference ofstrain dominance might be attributed to the different varieties of Chinese cabbage cultivatedin these two localities.For instance,the main Chinese cabbage variety cultivated in Pekingwas“Qinpaikou”,from which the isolates of K_(1-3) and K_(1-2) were in the ratio of 3:2.Themain Chinese cabbage variety grown in Tientsin was“Tianjinl(?)”,from which the isolates ofK_(1-3) and K_(1-2) was in the ratio 1:5.Isolates made from two kinds of seeding plants,namely the overwintered seed plants plant-ed out in spring and the seed plants grown from vernalized seeds,revealed that they wereessentially K_(1-2) and K_(1-3).It was believed that these virus entities were carried in the over-wintered seed plants and disseminated to other cruiferous plants after planting out in spring.These two essential virus entities were isolated from successive cruciferous crops throughoutthe growing season.Therefore the summer sown cabbage served as one of the principal hostsfor the virus to tide over summer,while the autumn Chinese radish which was sown usually10-15 days earlier than Chinese cabbage,served as one of the important bridge hosts.

    1962年至1963年系统地调查北京及天津白菜区十字花科作物上逐月出现的病毒类型及其相对数量,以确定十字花科作物之间病毒的相互关系。从109个分离物中,根据寄主反应,区分成7个类型,其中Ⅰ、Ⅱ、Ⅲ型都和芜菁花叶病毒(白菜孤丁病毒1号即 K_1)的抗血清起反应,因此认为它们是白菜孤丁病毒1号的相关株系:Ⅰ型定为 K_(1-2),根本不侵染菸草;Ⅱ型定为 K_(1-3),能侵染普通菸,产生局部坏死斑,但不侵染心叶菸;Ⅲ型定为 K_(1-4),能侵染心叶菸产生局部坏死斑,能或不能侵染普通菸与产生局部坏死斑,致死温度稍高于65℃;Ⅳ型为典型的白菜孤丁病毒1号的原株系(K_(1-1));Ⅴ及Ⅵ型是未经鉴定的毒原;Ⅶ型是典型菸草环斑型花叶病毒(K_3)。京、津两地109个分离物中,Ⅰ型(K_(1-2))占59%,Ⅱ型(K_(1-3))32%,Ⅲ型(K_(1-4))5.5%,Ⅳ型(K_(1-1))0.9%,Ⅴ型0.87%,Ⅵ型0.87%,Ⅶ型(K_3)0.87%。其中以 K_(1-2)及 K_(1-3)(芜菁花叶病毒亦即白菜孤丁病毒1号)为主,其他类型均不重要。北京及天津两地十字花科作物上病毒类型的分布显然有些差别,在北京...

    1962年至1963年系统地调查北京及天津白菜区十字花科作物上逐月出现的病毒类型及其相对数量,以确定十字花科作物之间病毒的相互关系。从109个分离物中,根据寄主反应,区分成7个类型,其中Ⅰ、Ⅱ、Ⅲ型都和芜菁花叶病毒(白菜孤丁病毒1号即 K_1)的抗血清起反应,因此认为它们是白菜孤丁病毒1号的相关株系:Ⅰ型定为 K_(1-2),根本不侵染菸草;Ⅱ型定为 K_(1-3),能侵染普通菸,产生局部坏死斑,但不侵染心叶菸;Ⅲ型定为 K_(1-4),能侵染心叶菸产生局部坏死斑,能或不能侵染普通菸与产生局部坏死斑,致死温度稍高于65℃;Ⅳ型为典型的白菜孤丁病毒1号的原株系(K_(1-1));Ⅴ及Ⅵ型是未经鉴定的毒原;Ⅶ型是典型菸草环斑型花叶病毒(K_3)。京、津两地109个分离物中,Ⅰ型(K_(1-2))占59%,Ⅱ型(K_(1-3))32%,Ⅲ型(K_(1-4))5.5%,Ⅳ型(K_(1-1))0.9%,Ⅴ型0.87%,Ⅵ型0.87%,Ⅶ型(K_3)0.87%。其中以 K_(1-2)及 K_(1-3)(芜菁花叶病毒亦即白菜孤丁病毒1号)为主,其他类型均不重要。北京及天津两地十字花科作物上病毒类型的分布显然有些差别,在北京地区 K_(1-3)占51.2%,K_(1-2)占34.1%,K_(1-4)占7.3%,其余 K_(1-1),Ⅴ及Ⅵ各占2.5%,无 K_3,而在天津地区则 K_(1-2)占68.8%,K_(1-3)占22.9%,K_(1-4)占6.3%,有 K_3的出现(2.1%),而无 K_(1-1),Ⅴ及Ⅵ。这种差异可能与当地所栽品种及十字花科蔬菜种类有关,因为北京的白菜以青白口品种为主,而 K_(1-3)和 K_(1-2)在青白口品种上的出现此数为3∶2。天津地区的白菜品种邓鄯沽大核桃纹、高杆连心壮及天津绿上的 K_(1-3)和 K_(1-2)的出现比数相应为1∶5,1∶2及3∶4。根据两种采种株,即越冬菜株及当年播的春化种子的种菜上的毒原类型分析,一般均为,K_(1-2)及 K_(1-3),而出现的次数在越年采种株上为多,可见越年采种株是白菜孤丁病毒的主要越冬寄主之一,春化种子的种菜上的病原可能是从越冬采种株上传来的,根据3—10月各种十字花科作物上病毒类型出现次数的分析,K_(1-2)及 K_(1-3)在四至五月间在留种菜、小白菜、油青菜及甘兰上达到高峯,六月间则出现在白菜及甘兰上,最后则出现在秋白菜上,其中甘兰是京津六至九月间的连续作物,因此作为主要越夏寄主的可能性更大,而萝卜则因其播种较秋白菜早10天至15天,正当传毒翅蚜的发生期,因此认为是一个比较危险的过渡寄主。

     
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