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propagating     
相关语句
  传播
     The Attenuation of Plane Shock Waves Propagating in an Elastoplastic Medium
     在弹塑性介质中传播的平面激波的衰减
短句来源
     SEISMIC WAVES IN A MULTI-LAYERED ELASTIC HALF SPACE DUE TO A HORIZONTALLY PROPAGATING VERTICAL FAULT
     层状弹性半空间中水平向传播垂直断层引起的地震波
短句来源
     HARMONIC PLANE WAVE PROPAGATING IN AN ARBITRARY WEDGE
     简谐平面弹性波在楔形域中传播
短句来源
     Some Characteristics of Whistler Mode Waves Propagating Through the Low-latitude Ionosphere
     哨声模波通过低纬电离层传播的某些特征
短句来源
     Propagating Beam Method of Optical Waveguide Coupling
     光波导耦合的光束传播方法
短句来源
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  扩展
     Crack Propagating and Machining Damage of Machinable Ce-ZrO_2/CePO_4 Ceramic
     可加工Ce-ZrO_2/CePO_4陶瓷材料的裂纹扩展及加工损伤
短句来源
     Initiating and Propagating of Radius Crack for Cold DrawnProducts of Valve Steel 5Cr_21Mn9Ni4N
     5Cr_21Mn9Ni4N阀门钢冷拉材半径裂的形成和扩展
短句来源
     DYNAMIC OBSERVATION OF PROPAGATING PROCESS OF CRACKS IN Si_3N_4-BASED CERAMICS
     Si_3N_4基陶瓷裂纹扩展过程的动态观察
短句来源
     When the B2O3/TiO2 mole ratio is zero, the reinforcements of the composites are α-Al2O3 and Al3Ti, the ultimate tensile strength (σb) and elongation (5) are 250.4 MPa and 4.0% respectively (room temperature). The fracture mechanism of the composite is characterized by cracks initiating firstly in Al3Ti rods and then propagating to the interface.
     当B2O3/TiO2摩尔比为0时,增强相由α-Al2O3颗粒和棒状物Al3Ti组成,抗拉强度和延伸率分别为250.4 MPa和4.0%,断口中有的棒状物自身开裂,断裂由Al3Ti自身萌生裂纹,并沿其解理面扩展至界面引起.
短句来源
     However, the fatigue crack propagating rate in SUS 304 is slower than that in SUS 304N in the region of high stress amplitudes.
     但在高应力区,SUS 304中的疲劳微裂纹萌生后,其扩展速率小于SUS 304N,使它在高应力区的疲劳寿命超过了SUS 304N.
短句来源
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  繁殖
     The result of the seedling raising research, using single-bud stem segment ofBougainvillea glabra as the propagating material, shows that the culture medium suitablefor bud inducing and multiplication is: MS+BA1~2 (mg/L) +NAA0. 4~1 (mg/L). Different strains need different concentration of additional BA and NAA;
     以叶子花单芽茎段为繁殖村料进行组织培养育苗研究,结果表明:适宜芽诱导和增殖的培养基为MS+BA1~2(mg/L)+NAA0.4~1(mg/L),不同品种附加BA和NAA的浓度不同;
短句来源
     In main propagating season, the mean pregnancy rate, litter size and reproductive index were 18 .62%, 6. 03 and 0. 6846, respectively.
     主要繁殖期在 4~9月,研究期间平均怀孕率为 18.62%,平均胎仔数为 6.03 只,繁殖指数0.6846,每年4~5月和8~9月为两次妊娠高峰。
短句来源
     Conclusions\ The result of Student-New-Keul analysis suggested that Hep-2 is superior to other two cell lines for propagating Cpn.
     结论 经Student- New - Keul分析,发现Hep- 2细胞是最适合繁殖Cpn 的细胞
短句来源
     The growth rate of callus in one month was 12.70. The best medium for multiplying clumpy buds was B\-\{5\}+BA 0.5 mg/L+IAA 0.2 mg/L, the highest propagating ratio reached 25.5. These results could meet the technology requirements of rapid\|propagation in large scale production.
     诱导丛生芽的最适培养基为 :B5+BA 0 .5mg/L +IAA 0 .2mg/L ,丛生芽繁殖系数高达 2 5 5倍 ,技术上达到了快速繁殖规模生产的要求。
短句来源
     In order to protect and use the natural resources of the porcupines betterly,the authors have proceeded to investigation of the artificial propagating porcupines in 1999.3~2004.4.Result enunciation: The sex-mature age of the female porcupines is 10~12 month age,the sex-mature age of male porcupines is 12~14 month age;
     为了更好地保护和利用豪猪的自然资源,作者于1999年3月~2004年12月对豪猪的人工繁殖技术进行了研究,结果表明:雌豪猪的性成熟年龄为10~12月龄,雄豪猪的性成熟年龄为12~14月龄;
短句来源
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  蔓延
     It produces V+Ti+Cr+Al2O3 more easily and determines the feasibility of the self propagating high temperature synthesis reaction consequently.
     对NH4VO3-TiO2-Cr2O3-Ni-Al反应体系的相关反应进行了热力学分析,表明体系生成V+Ti+Cr+Al2O3的趋势最大,生成物最稳定. 确定了采用自蔓延模式的可行性.
短句来源
     The results show that ploymer addition can not only make the ignition of thermite type reaction more easily and accelerate the propagating velocity of combustion wave,but also enhance the temperature of self propagating combustion and change the combustion mode of Al Cr 2O 3 system from oscillating mode to near stable plane mode.
     结果表明添加聚合物不仅能使铝热反应型体系更易点燃,燃烧波蔓延速度加快,而且还能提高自蔓延燃烧温度,使Al-Cr2O3体系燃烧模式趋向于稳态平面燃烧。
短句来源
     Adding Fe 3O 4+Al system with suitable addition in raw Fe 2O 3+Al system could cause combustion temperature, propagating rate and SHS transformation rate to be increased, whereas addition of Fe 3O 4+Al system in Fe 2O 3+Al system was beyond certain value, combustion temperature and SHS transformation rate could be reduced though propagating rate was increased further.
     在工业原料Fe2 O3 +Al体系中加入适量的Fe3 O4+Al体系 ,使燃烧温度、蔓延速率及SHS反应转化率均有所升高 ; 但加入过量的Fe3 O4+Al体系 ,虽然使蔓延速率进一步增大 ,但却引起燃烧温度和SHS反应转化率有所下降 .
短句来源
     Reaction mechanism of self propagating high temperature synthesis BN by thermite reaction
     自蔓延还原合成BN反应机理
短句来源
     A suitable addition of Fe_3O_4+Al system to the Fe_2O_3+Al system could cause combustion temperature,propagating rate and SHS transformation rate to be increased,whereas the addition of Fe_3O_4+Al system in the Fe_2O_3+Al system was beyond certain value,the combustion temperature and SHS transformation rate could be reduced though propagating rate was increased further.
     在工业原料Fe2 O3+Al体系中加入适量的Fe3O4+Al体系 ,使燃烧温度、蔓延速率及SHS反应转化率均有所提高 ; 但加入过量的Fe3O4+Al体系 ,虽可使蔓延速率进一步增大 ,却引起燃烧温度和SHS反应转化率有所下降。
短句来源
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      propagating
    The scattering of plane time-harmonic electromagnetic waves propagating in a homogeneous chiral environment by a perfectly conducting grating is studied.
          
    Permissions propagating to control, conflict and cyclic in delegable model were analyzed and resolved.
          
    Compared with conventional methods, this motion measurement algorithm based on multi-level simultaneous wavelet transform avoids propagating errors between the decomposed levels.
          
    In this review article, we discuss both experimentally and theoretically the second-order double-slit interference for a thermal light source which is random in transverse propagating direction.
          
    Much of our work has direct impact on the study of similar discrete phenomena in systems beyond optics, including sound waves, water waves, and matter waves (Bose-Einstein condensates) propagating in periodic potentials.
          
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    This paper is a supplement to the author's previous paper "The Constants and Analysis of Rigid Frames", published in the first issue of the Journal. Its purpose is to amplify as well as to improve the method of propagating joint rotations developed, separately and independently, by Dr. Klouěek and Prof. Meng, so that the formulas are applicable to rigid frames with non-prismatic bars and of closed type. The method employs joint propagation factor between two adjacent joints as the basic frame constant...

    This paper is a supplement to the author's previous paper "The Constants and Analysis of Rigid Frames", published in the first issue of the Journal. Its purpose is to amplify as well as to improve the method of propagating joint rotations developed, separately and independently, by Dr. Klouěek and Prof. Meng, so that the formulas are applicable to rigid frames with non-prismatic bars and of closed type. The method employs joint propagation factor between two adjacent joints as the basic frame constant and the sum of modified stiffness of all the bar-ends at a joint as the auxiliary frame constant. The basic frame constants at the left of right ends of all the bars are computed by the consecutive applications of a single formula in a chain manner. The auxiliary frame constant at any joint where it is needed is computed from the basic frame constants at the two ends of any bar connected to the joint, so that its value may be easily checked by computing it from two or more bars connected to the same joint.Although the principle of this method was developed by Dr. Klouěek and Prof. Meng, the formulas presented in this paper for computing the basic and auxiliary frame constants, besides being believed to be original and by no means the mere amplification of those presented by the two predecessors, are of much improved form and more convenient to apply.By the author's formula, the basic frame constants in closed frames of comparatively simple form may be computed in a straight-forward manner without much difficulties, and this is not the case with any other similar methods except Dr. Klouěek's.The case of sidesway is treated as usual by balancing the shears at the tops of all the columns, but special formulas are deduced for comput- ing those column shears directly from joint rotations and sidesway angle without pre-computing the moments at the two ends of all the columns.In the method of propagating unbalanced moments proposed by Mr. Koo I-Ying and improved by the author, the unbalanced moments at all the bar-ends of each joint are first propagated to the bar-ends of all the other joints to obtain the total unbalanced moments at all the bar-ends, and then are distributed at each joint only once to arrive at the balanced moments at all the bar-ends of that joint. Thus the principle of propagating joint rotations with indirect computation of the bar-end moments is ingeneously applied to propagate unbalanced moments with direct computation of the bar-end moments, and, at the same time, without the inconvenient use of two different moment distribution factors as necessary in all the onecycle methods of moment distribution. The basic frame constant employed in this method is the same as that in the method of propagating joint rotations, so that its nearest approximate value at any bar end may be computed at once by the formula deduced by the author. Evidently, this method combines all the main advantages of the methods proposed by Profs.T. Y. Lin and Meng Chao-Li and Dr. Klouěek, and is undoubtedly the most superior one-cycle method of moment distribution yet proposed as far as the author knows.Typical numerical examples are worked out in details to illustrate the applications of the two methods.

    本文為著者前文“剛構常數與剛構分析”之補充,其目的在將角變傳播法及不均衡力矩傳播法加以改善,以便實用。此二法均只需一個公式以計算剛構中所有各桿端之基本剛構常數(即任何二相鄰結點间之角變傳播係數),將此項公式與柯勞塞克之公式相比較,藉以指出前者較後者為便於應用,並亦可用之以直接分析較簡單之閉合式剛構,此外補充說明此法中之剛構常數與定點法之關係,剛構有側移時計算各結點角變所需之各項公式亦行求出。不均衡力矩傳播法係顧翼鹰同志最近研究所得者,既係直接以桿端力矩為計算之對象,而且只須採用不均衡力矩分配比將各結點作用於各桿端不均衡力矩之總和,一次分配,即得所求各桿端分配力矩之總值,實係力矩一次分配法之一大改進,著者將顧氏之法加以推廣与改善,使其原則簡明而計算便捷,著者認為此法係將林、柯、孟三氏法之所有優點熔冶於一爐,實可稱為现下最優之力矩一次分配法。最後列舉算例,以說明此二法在實際工作中之應用。

    In this paper a method for computing the influence lines in open rigid frames is presented. This method is based on the Müller-Breslau's principle that every deflection diagram is an influence line. If any section of a given rigid frame, at which the influence llne of any stress function——such as reaction, shear, bending moment and torsion——is desired, is allowed to produce freely a corresponding unit deformation, the deflection diagram of this frame will be the same as the influence of that stress function.The...

    In this paper a method for computing the influence lines in open rigid frames is presented. This method is based on the Müller-Breslau's principle that every deflection diagram is an influence line. If any section of a given rigid frame, at which the influence llne of any stress function——such as reaction, shear, bending moment and torsion——is desired, is allowed to produce freely a corresponding unit deformation, the deflection diagram of this frame will be the same as the influence of that stress function.The fundamental idea of this method is that the angle-changes at ends of bars due to unit deformation can be determined by propagating joint rotations and that the resulting deflection diagram which is the same as the influence line of the corresponding stress function may be determined by method of conjugate beam.Typical numerical examples are worked out to show the application of this method.

    本文提供一種求敞口剛架影響線的方法。依據米勒白斯老(Müller-Bres1au)氏“變位線即影響線”的原理,令剛架中某點有與其應力函數相应的單位形变,則剛架因此所產生的變位曲線即為該應力函數的影響線。本文所叙述的方法,係利用角變傳播原理,求出各桿兩端由於上项單位形變所引起的角变,再根據此項角變求出各桿的變位曲線,亦即該應力函數的影響線。举有實例以示此法之應用。

    The analysis of rigid frames with so called "span-change" beams such as curved, gabled, folded or trussed ones is rather difficult. The method of redundant forces or method of slope deflection are too tedious to be used in practical work. In this paper a new method namely the method of propagating unbalanced moments and lateral forces is proposed for analyzing such frames.The principle of this method is some what like that of the one cycle method of moment distribution for analyzing rigid frames with straight...

    The analysis of rigid frames with so called "span-change" beams such as curved, gabled, folded or trussed ones is rather difficult. The method of redundant forces or method of slope deflection are too tedious to be used in practical work. In this paper a new method namely the method of propagating unbalanced moments and lateral forces is proposed for analyzing such frames.The principle of this method is some what like that of the one cycle method of moment distribution for analyzing rigid frames with straight beams and its procedure may be briefly described as follows: the unbalanced moments and lateral forces at all joints of the frame are calculated first and propagated successively to all the other joints by means of a set of the so-called constants of deformation-propagation, which are to be computed from the properties of the frame only. Then its original and various propagated unbalanced moments and lateral forces at each joint are summed up and distributed among all the bar-ends at that joint according to special formulas to obtain the distributed moment and lateral force at each bar-end. Finally, the balanced moment and lateral force at each bar-end are obtained simply by summing up the following three components respectively: (1) those at each bar-end assumed fixed, M~F and H~F; (2) those propagated to each bar-end, M~P and H~P; and (3) those distributed to each bar-end, M~D and H~D. That is:M=M~F+M~P+M~D, H=H~F+H~P+H~D.Evidently, the procedure of this method is very simple and direct, and the work of calculations is greatly reduced, especially when any span-change rigid frame is to be analyzed for many loading conditions.Two typical examples are given in this paper to illustrate the application of the method and the author hopes deeply that this method will be found usefull by the structural engineers in designing such rigid frames.

    凡具有曲梁、山牆式梁、摺式梁、门式梁、桁架梁或其他“跨变”横梁之剛構均可称为“跨变剛構”。跨变剛構常为高次的超靜定結構,其应力分析至为复杂。採用冗力法、最少功法或角变位移法以分析此类刚構,常嫌过繁,当结構受有多种荷載情形时,更需作多次計算,尤覺繁不堪言,頗不为实际工作者所乐用。著者於本文發表一不均衡力矩及侧力傳播法以分析此类剛構。無論剛構本身以及單个的跨变横梁是否对称,也不論組成剛構的各个桿件为等截面或为变截面,本法均可适用,因此本法之实用范圍可称广泛。 本法之基本观念可簡單描述如次:首先將作用於各結点的不均衡力矩及側力,傳播至所有其他結点之桿端,求得每一結点的不均衡力矩及侧力的总值,然后經过一次分配則可得出該結点桿端之分配力矩及分配侧力。計算所需之最終桿端力矩及侧力即为a)定端力矩或側力,b)傳播力矩或侧力,以及c)分配力矩或側力三者之和。 本法之性质属于一次分配法之范疇,共精神与我国結構学者蔡方蔭先生所得分析直桿剛構之“不均衡力矩傳播法”甚为相似,如果跨变横梁变为直桿,則本法所得計算公式即簡化而成蔡氏所得之公式。 文中举二算例,以明本法之应用。 著者認为採用此法以分析跨变剛构,不仅計算可趋精簡,且当結構承...

    凡具有曲梁、山牆式梁、摺式梁、门式梁、桁架梁或其他“跨变”横梁之剛構均可称为“跨变剛構”。跨变剛構常为高次的超靜定結構,其应力分析至为复杂。採用冗力法、最少功法或角变位移法以分析此类刚構,常嫌过繁,当结構受有多种荷載情形时,更需作多次計算,尤覺繁不堪言,頗不为实际工作者所乐用。著者於本文發表一不均衡力矩及侧力傳播法以分析此类剛構。無論剛構本身以及單个的跨变横梁是否对称,也不論組成剛構的各个桿件为等截面或为变截面,本法均可适用,因此本法之实用范圍可称广泛。 本法之基本观念可簡單描述如次:首先將作用於各結点的不均衡力矩及側力,傳播至所有其他結点之桿端,求得每一結点的不均衡力矩及侧力的总值,然后經过一次分配則可得出該結点桿端之分配力矩及分配侧力。計算所需之最終桿端力矩及侧力即为a)定端力矩或側力,b)傳播力矩或侧力,以及c)分配力矩或側力三者之和。 本法之性质属于一次分配法之范疇,共精神与我国結構学者蔡方蔭先生所得分析直桿剛構之“不均衡力矩傳播法”甚为相似,如果跨变横梁变为直桿,則本法所得計算公式即簡化而成蔡氏所得之公式。 文中举二算例,以明本法之应用。 著者認为採用此法以分析跨变剛构,不仅計算可趋精簡,且当結構承受多种荷載情形时,尤其具有显明?

     
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