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  arc
     Study on Power Factor Correction of Arc Welding Inverter Supply
     焊逆变电源功率因数校正技术的研究
短句来源
     A Research on Evolution and Different Types for the Skarn Deposits on Southern Margin of Gangdisi Volcanic-magmatic Arc, Tibet
     西藏冈底斯南缘火山—岩浆演化与不同类型夕卡岩矿床的研究
短句来源
     Degradation of Organic Contaminations from Gas and Liquid Phase Using Gliding Arc Discharge Plasma
     滑动放电等离子体降解气相及液相中有机污染物的研究
短句来源
     Research on Intelligent Technologies of Arc Welding Robot
     焊机器人工作站智能化技术研究
短句来源
     Preparation Bioceramic Film on Titanium by Micro Arc Oxidation-hydrothermal Treatment and Study of Cytocompatibility
     微氧化—水热处理法在纯钛表面制备生物陶瓷涂层及其细胞相容性的实验研究
短句来源
更多       
  arcs
     Modeling of the EEE802.2 LLC Type 3 Protocol Based on Time Petri Net with Inhibitor Arcs
     基于带抑止时间Petri网的IEEE802.2LLC3型协议的建模
短句来源
     In this paper, we investigate inverse limits on using a single bonding map chosen from the specific family,f t(x)=2x, 0≤x<1/2 2(t-1)(x-1)+t, 1/2arcs to indecomposable continua.
     研究了关于[0,1]上使用键映射ft(x)=2x,0≤x≤1/22(t-1)(x-1)+t,1/2<x≤1{对于0≤t≤1的逆向极限.正如逆向极限从段到不可分解的连续统一样,出现了许多有趣的连续统
短句来源
     In the present notes we consider the boundary properties of the integrals of Cauchy type:andwhere L1 and L2 are smooth simple arcs with ends α,b and c,d respectively, c1,c2 and A1 A2 may be α or b and c or d respectively.
     本文考虑哥西型积分的边界性质,其中L)1和L_2是简单光滑分别以a,b和c,d为端点,c_1,c_2和A_1,A_2可以分别为a或b和c或d.
短句来源
     This article introduces the calculation and application of the curvature radius of standard ellipsoid head, and the calculation, comparison, examination and selection of the deviation of approximate ellipsoid heads, recommends the approximate ellipsoid heads with two arcs (R0. 8415D, R0. 1585D) and with three arcs.
     阐述标准椭圆封头曲率半径的计算和运用,近似椭圆封头偏差的计算、比较、检测和选用,并推荐两半径为R0、8415D、r0、1585D以及三近似椭圆封头。
短句来源
     The elliptic and parabolic arcs can be represented exactly by the CT-Bézier curve.
     利用CT-Béz ier曲线能精确表示椭圆与抛物线
短句来源
更多       
  an arc
     The arc’s moving speed is about 100 m/s and the electric field is 80 V/mm at an arc current of 0.6A.
     在电流0.6A左右得到了约100m/s的电移动速度和约80V/mm的电场强度,产生了非平衡度较高的大气压非平衡等离子体。
短句来源
     This algorithm provides a method of local determining an arc joining P_k and P_(k+1), the arc having slopes eqttal to tan θ_h and tan θ_(k+1) at the respective end points.
     本算法给出了用一段联结给定的数据点P_K与P_(KH)的局部化处理方法,而对应于P_K与P_(KH)的端点处的斜率为tanθ_K及tanθ_(K+1)。
短句来源
     If uv is an arc in T(n,n)implies d~-(u)+d~+(v)≥n-2≥4,then T(n,n)is Hamiltonian,except T(n,n)is isomorphic to one of twoclesses of special graphs which are described.
     本文证明了:如果 uv 是 T(n,n)的一条,蕴含d~-(u)+d~+(v)≥n-2≥4,则 T(n,n)是 Hamilton 图,除非 T(n,n)属于两类已被刻划的特殊图类。
短句来源
     An Arc Welding Robot Control System
     焊机器人控制系统
短句来源
     Design and realization of an arc welding robotic control system based on open architecture
     基于开放式体系结构的焊机器人控制系统设计和实现
短句来源
更多       
  circular arc
     The analysis of adjusting errors on processing double circular arc profile bevel gear
     双圆齿锥齿轮调整误差分析
短句来源
     Numerical and Experimental Study on Flexible Froming the Circular Arc of Sheet Metal Using Plasma Arc
     等离子体柔性成形数值模拟和实验研究
短句来源
     Finte Element Analysis of the Deformation at Concave arc on 91 Model Double circular arc Tooth Profile
     91型双圆齿轮凹单点啮合变形的有限元分析
短句来源
     Finally, through the connection port of PARASOLID between UG software and ANSYS/LS-DYNA software, the three-dimension solid model of double circular arc spiral bevel gearing obtained above in UG was imported into ANSYS/LS-DYNA, a finite element analyzing about contact stress of double circular arc spiral bevel gearing was carried out by applying new loading method.
     最后,通过UG软件和ANSYS/LS-DYNA之间的PARASOLID接口工具包,将UG软件中得到的啮合齿轮模型导入ANSYS/LS-DYNA有限元分析软件,给出一种新的加载方法,进行了双圆齿锥齿轮传动的接触应力的有限元分析。
短句来源
     The Common Subprogram Design of Circular Arc Connection
     园连接通用子程序设计
短句来源
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    为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
      arc
    Let Γ be a smooth compact convex planar curve with arc length dm and let dσ=ψ dm where ψ is a cutoff function.
          
    The circulant digraphDCn(S) is a directed graph with vertex setZn and arc set {(i,i+s): i ∈ Zn, s ∈ S}.
          
    ThenCn(S) is arc-transitive if and only if Xoacts transitively onS.
          
    A packing of the complete directed symmetric graph DKv with m-circuits, denoted by (v,m)-DCP, is defined to be a family of arc-disjoint m-circuits of DKv such that any one arc of DKv occurs in at most one m-circuit.
          
    It is proved that there is no chaotic group actions on any topological space with free arc.
          
    更多          
      arcs
    Consideration is given to the probabilistic ow network whose arcs fail independently with the given probabilities.
          
    The arcs of the embedded diagnostic graph constitute composite interconnection channels between the nonadjacent tested module and the testing processing modules of the system.
          
    A variational problem is formulated and extremal thrust arcs are described.
          
    Papers containing results of analytical investigations on thrust arcs are reviewed in depth.
          
    The trajectory consists of line segments and circular arcs.
          
    更多          
      an arc
    The structure of the front of an arc in a magnetohydrodynamic accelerator
          
    In the second problem the motion of the contour takes place near a cylindrical wall, and it consists of an arc of a circle and a straight segment.
          
    It is shown that an arc burning in a channel with insulated walls is much more stable under these conditions than an arc with the same parameters burning in free space.
          
    Investigation of characteristics of an arc column in laser arc welding using numerical simulation
          
    The effect of transverse magnetic field on the characteristics of an arc in a cylindrical channel
          
    更多          
      circular arc
    In [3], a study was made of the generation and propagation of a wave from a bow front in the form of a circular arc.
          
    Effect of non-equilibrium condensation of moist air on unsteady behaviour of shock waves around a circular arc blade
          
    In the present study, the effect of non-equilibrium condensation of moist air on the self-excited shock wave oscillation on a circular arc blade was investigated numerically.
          
    We consider a potential energy trough centered along a circular arc of radiusR.
          
    We consider a problem for the Laplace equation in a circular sector wherein heat exchange takes place on the sides of the sector in accordance with Newton's law and a temperature distribution is specified on the circular arc.
          
    更多          


    A new method for the synthesis of polyene acids has been described.This consists of the condensation of crotonic ester or sorbic ester with suitable alde- hydes,followed by hydrolysis.Thus a C4 or C6 side chain with conjugated double bonds can be introduced in a single step.Condensation of methyl cro- tonate with benzaldehyde and with furfural in the presence of alcohol-free sodium methoxide gives,after hydrolysis,cis-δ-phenyl-△~(αγ)-pentadienoic acid(m.p.137.5- 138°)and cis δ-2-furan-△~(αγ)-pentadienoic acid(m.p.109-111°)respectively;while...

    A new method for the synthesis of polyene acids has been described.This consists of the condensation of crotonic ester or sorbic ester with suitable alde- hydes,followed by hydrolysis.Thus a C4 or C6 side chain with conjugated double bonds can be introduced in a single step.Condensation of methyl cro- tonate with benzaldehyde and with furfural in the presence of alcohol-free sodium methoxide gives,after hydrolysis,cis-δ-phenyl-△~(αγ)-pentadienoic acid(m.p.137.5- 138°)and cis δ-2-furan-△~(αγ)-pentadienoic acid(m.p.109-111°)respectively;while condensation of methyl crotonate with anisaldehyde under the same conditions gives a mixture which has been separated into two components:cis-δ-p-methoxy- phenyl-△~(αγ)-pentadienoic acid(m.p.115-118°)and its trans-isomer(m.p.180°, to liquid crystals and 220-221°,to clear liquid).All the above cis-acids have been converted without difficulty into the corresponding trans-acids. Condensation of sorbic ester with benzaldehyde in the presence of alcohol- free potassium methoxide gives,after hydrolysis,7-phenyl-heptatrienoic acid(m. p.189-190°,to liquid crystals and 199°,to clear liquid).

    本文叙述了一种综合多烯酸的方法:将α-丁烯酸酯或α,γ-己间二烯酸酯与适当的醛缩合,再进行水解。这样,仅用一个步骤便可引进四个或六个碳原子的共轭双键的侧链。丁烯酸甲酯与苯甲醛或糠醛在去醇的甲氧基钠影响下缩合,得到顺-δ-苯基-戊间二烯酸(熔点137.5—138°)或顺-δ-2-呋喃-α,γ-戊间二烯酸(熔点109—111°);同样情形,α-丁烯酸甲酯与对-甲氧基苯甲醛缩合时得出顺-δ-对-甲氧基苯-α,γ-戊间二烯酸(熔点115—118°)及其反式的几何异构体(熔点:180°熔为液晶,220—221°熔为透明液体)。所有上述的顺式酸用汞光灯照射后,可全部转变为其相应的反式酸。α,γ-己间二烯酸甲酯与苯甲醛在去醇的甲氧基钾影响下缩合,水解后得到7-苯基-庚间三烯酸(熔点:189—190°熔为液晶,199°熔为透明液体)。

    Further study of the effect of micro-structure of the sample electrode on the spectrochemical analysis of steels revealed that the effect on the analysis of W, Si and Ni all increases with the increase of the carbon content and for different analysis line pairs chosen, the effect not only differs in magnitude but also can be different in direction as was observed in the case of Cr in chromium steels. The effect on the analysis of Mn in all the steel samples studied is not significant. Structure effects observed...

    Further study of the effect of micro-structure of the sample electrode on the spectrochemical analysis of steels revealed that the effect on the analysis of W, Si and Ni all increases with the increase of the carbon content and for different analysis line pairs chosen, the effect not only differs in magnitude but also can be different in direction as was observed in the case of Cr in chromium steels. The effect on the analysis of Mn in all the steel samples studied is not significant. Structure effects observed under different excitation conditions show that under the same excitation condition, the arc temperature which is indicated by the log intensity ratio of two iron lines of different excitation potential is higher when the sample electrode is of annealed structure; and in light sources of the same arc temperature the relative concentration of alloying elements to iron is higher when the sample electrode is of quenched structure. Since these two factors have opposite effect on spectral line intensities, the result of analysis will be different for different line pairs chosen. If the analysis line pair is homologous, the effect observed is due to a difference of relative concentration of different elements in the arc column alone, and the result of analysis is always higher when the sample electrode is of quenched structure. This may he explained by the fact that the presence of carbon in solid solutions decreases the interatomic forces or shows a lowering of energy of volatilization. This lowering is different for different elements but all increases with the increase of carbon content.

    在过去工作的基础上,进一步观察了合金钢的组织结构对于钨、镍、硅、锰的光谱分析的影响和碳钢的组织结构对于硅、锰的影响。这些影响都是随着钢中含碳量的增加而增加,对与不同元素有程度上的不同。改变激发条件的试验结果指出:1)在同一激发条件下,淬火组织试样的温比退火组织的低;2)在同一温时,柱中合金元素与铁元素的浓度比值是淬火组织的比退火组织的高。由于这两个因素对于谱线强度所发生的影响的方向相反,所以在实际的光谱分析中,组织结构的影响便有不同的表现。 根据分析线对中的分析线与内标线的激发能差值的大小,可以说明为什么采用离子线或原子线作分析线对时所观察到的组织结构影响不同或者方向相反。当所用的分析线对比较均称时,淬火组织试样的分析结果总是比退火的高。引起组织结构影响的主要原因是由于在不同组织结构时蒸发情况的不同。试样中所含溶解碳量的增加使原子间力相应地减小,这可以解释为什么含碳量不同以及不同的合金元素引起不同的组织结构影响。

    This is a further study on the "Kwuting" of Chinese cabbage which has beendemonstrated to be caused by a strain of turnip virus (Turnip virus 1 Hoggan etJohnson).Isolates from the "Kwuting" of Brassica pekinensis,mosaic of B.chinensis,of B.oleracea var.capitata and of Raphnus sativus var.longipinnatus are mixed invarious proportions and inoculated to the Chinese cabbage seedlings.All mixturesproduce the same symptoms and the same degree of severity as Kwuting virusinoculated alone.Therefore in pathogenicity...

    This is a further study on the "Kwuting" of Chinese cabbage which has beendemonstrated to be caused by a strain of turnip virus (Turnip virus 1 Hoggan etJohnson).Isolates from the "Kwuting" of Brassica pekinensis,mosaic of B.chinensis,of B.oleracea var.capitata and of Raphnus sativus var.longipinnatus are mixed invarious proportions and inoculated to the Chinese cabbage seedlings.All mixturesproduce the same symptoms and the same degree of severity as Kwuting virusinoculated alone.Therefore in pathogenicity they can only be grouped under thesame strain. When the air temperature in greenhouse is maintained at an optimum (around28℃) of the disease development,a variation of the soil temperature (15°,20%25° and 30℃) by using the modified Wisconsin soil tanks doas influence the degreeof expression of symptoms.However,the influence is more significant in the caseof a susceptible variety as Chiaochowpai,and less in the cases of a tolerant varietyas Chinpaikou and a variety of Brassica chinensis L. During the course of the development of the Chinese cabbage plant,an infec-tion which takes place at the early stage (especially in the stape prior to 7-8leaves),causes far more severe symptoms than in the case of late infections(usually after the starting of heading).This effect is also more pronounced inthe case of a susceptible variety "Chioachowpai". Varietal tests for the resistance to "Kwuting" are crrried out both at Pekingand Hsingchen (Northeast China).According to the results of a two-years-test,it is revealed that four varieties,namely Shangtung No.1,No.2,KungchulingTamayi and Hsingchen Tamayi are highly resistant both at Peking and Hsingchen,whereas a tolerant variety Chinpaikuo shows high tolerance at Peking,but highsusceptibility at Hsingchen.Some commercial varieties which are generally cultiva-ted in north-eastern provinces,such as Chiaochowpai,Heitaoweng and Pantsoutsaiare all highly susceptible.

    白菜孤丁病毒与油青菜花叶病毒、甘兰花叶病毒及蘿卜花叶病毒经各种配合的混合接种后,在症状土及發病率上沒有显著的差异,说明它們不但是同一个毒种,而且可能是同一个毒株。土壤温度影响白菜丁的發病,土温在30℃时,高度感病的胶州白菜的發病几乎比在15℃的土温高出一倍。但这种关系在耐病的青白口上,以及感病的另一菜种油青菜(Brassica Chinensis L.)上,則不显著。白菜在幼苗期受侵较后期受侵的發病严重,但这种影响也是以高度感病的品种为显著,例如胶州白菜在8月29日接种的比在10月23日接种的病情指数高一倍多。这种关系对耐病的青白口及高度抗病的山东二号说来,在北京田间情况下不明显。在北京和辽宁兴城两地經1954及1955两年的比較試驗,选出了高度抗孤丁病的山东一号及二号、公主岭的大麻叶及兴城的大麻叶等4个品种。北京的青白口在北京地区是一个耐病的品种,但在兴城則失去其耐病性。山东著名的胶州白菜是一个高度感病的品种,其他如东北的半矬菜在兴城、徐水的白帮核桃纹在北京都是高度感病的。

     
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