查询词典 arc-weld

In addition, the effects of current, cathode cone angle and arc length on the current density and arc pressure distribution at anode surface in GTA welding are analyzed by the use of the built arc model, and the computed results agree well with the experimental results.

另外，运用建立的电弧数学模型，分析了焊接规范参数变化对直流GTAW电弧阳极表面电流密度和电弧压力径向分布规律的影响，计算结果与实验结论基本一致。

On the basis of analyzing running condition arc furnace system and researching characteristics of dust remover of arc furnace, taking the application of Harsvert-A in dust removing transformation of steelworks as an example, successful application of high-voltage frequency conversion technology on dust removing system of arc furnace in steelworks is introduced.

在分析了电弧炉设备的运行现状和研究了电弧炉除尘系统特点的基础上，通过Harsvert-A型高压变频器在某炼钢厂除尘系统改造中的应用实例，介绍了高压变频技术在炼钢厂电弧炉除尘系统中的成功应用。

The company mainly produces: NBC, NB series of gas protection welder, MZ series of automatic submerged arc welding machine, RSR series storage stud welding machine, WS series inverter inverter machines, LGK8 series of air cutting machine, ZX5, ZX7 series DC arc welding machine, BX series of exchanges, such as arc welding machine over 80 kinds of welding equipment.

本公司主要生产：NBC、NB系列气体保护焊机、MZ系列自动埋弧焊机、RSR系列储能螺柱焊机、WS系列逆变直流氩弧焊机、LGK8系列空气切割机、ZX5、ZX7系列直流弧焊机、BX系列交流弧焊机等80多种焊接设备。

The results show that laser-arc welding can achieve full penetration by single-path butt jointing through appropriate parameters; Y shape groove with 8 mm truncated edge can enhance the penetration ability of laser-arc hybrid welding. Low welding speed is good for penetration, however the limitation still exists for hick plates joint. Gap is significant factor of penetration when work pieces is large thickness. The hardness of thick plates joint shows that there is big difference in mold of vertical thermal cycle using laser-arc hybrid welding.

结果表明：通过激光功率等焊接规范匹配，激光-电弧复合焊接能实现20 mm厚板的全熔透单道对接；钝边为8 mm的Y形坡口有助于提高厚板激光-电弧复合焊缝熔透能力；降低焊接速度有利于提高熔深能力；工件厚度较大时，装配间隙对焊缝熔深能力的影响较为显著；接头硬度表明厚板激光复合焊焊缝纵向热循环模式存在较大差异。

One of, RHDHG series arc protection and created a domestic light, the low-voltage electric arc light protection precedent, to fill the domestic electric arc light at the time unable to protect the power bus of the blank, is now at more than 100 domestic substations, power plants, petrochemical and other high institutions to use more than 400 Units, the protection of the principle of new, faster removal of time to failure, fault location accuracy, user satisfaction high.

其中，RHDHG系列电弧光保护开创了国内中、低压电弧光保护的先河，填补了国内在电弧光发生时无法保护电力母线的空白，目前已在国内的100多个变电站、电厂、石化等企事业单位使用400多台，保护原理新颖，切除故障时间快，故障定位准确，用户满意度高。

Of the five stages deformation, the exact ages of the (2) and (3) were determined by 40Ar/39Ar method as 290 and 259 Ma respectively.2. New results on the metamorphic belts and associated metamorphism of the Xiaopu metamorphic rocksBased on detailed microtextural observations and occurrence of typical metamorphic minerals, five metamorphic belts in the Xiaopu metamorphic rocks are identified. From the north to the south, they are biotite belt, garnet belt, staurolite belt, andalusite belt, and sillimanite belt. I suggested that the metamorphic belts occurred in the Xiaopu area belongs to the high temperature/low pressure series, may have resulted from the later Permian crust extension at ca. 290 Ma.3. I suggest that there may have been a Carboniferous backarc basin along the southern slope of the Harlik Mountain.Detrital Zircon SHRIMP U-Pb dating indicated that the sedimentary age of the Julideneng formation lithic sandstone must be later than late Devonian, most likely is Carboniferous rather than previously thought Precambrian. Analyses on its geologic setting, location of provenance, and sedimentary environment suggest the Carboniferous strata may form in a lagged backarc basin bounded by backarc uplifts.5. Reconstruction of the post-Paleozoic tectonic evolution history of the Harlik MountainThe tectonic evolution of Harlik mountains since the Paleozoic were reconstructed as followings:(1) arc-affinity magmative activities occurred during the middle-Ordovician to early-Silurian;(2) the middle-Silurian to late-Devonian was a back-arc uplift stage;(3) back-arc extension featured the Carboniferous period;(4) post-collisional extension and/then compression during Permian;(5) at the Mesozoic, differential uplift developed; and (6) the late Cenozoic is the intra-continental re-orogen stage.6. Primary estimation of the crust shortening is madeThe folded pre-Mesozoic strata were used to estimate crust shortening along the Harliknanshankou-Koumenzi, Shichengzi-Baishitou, and Qincheng-Xiaopu sections. Their shortening ratios are 16.2%, 19.8%, and 20.1% respectively corresponding crust shortening are 4.3, 9, and 11.3 km.

根据Ar-Ar热年代学研究，精确测定了早二叠世伸展变形和晚二叠世挤压变形的峰期时代分别为290Ma和259Ma.2、提出了关于哈尔里克山南麓小铺一带变质带和变质作用的新认识根据显微观察资料和特征变质矿物的出现，把小铺一带的变质岩由SW向NE方向依次划分为黑云母带、石榴石带、十字石带、红柱石带和矽线石带等变质带；初步确定该区的变质作用属于中温-低压型，变质作用发生的时代为290Ma左右，是该区早二叠世地壳伸展的产物。3、首次提出哈尔里克山南麓在石炭纪可能发育弧后盆地的新观点根据哈尔里克山南麓原&居里得能组&岩屑砂岩的碎屑锆石SHRIMP U-Pb定年，确认这套地层的沉积不早于晚泥盆世，很可能是石炭纪，而不是前人所说的前寒武纪；结合对其区域地质背景、源区位置和沉积环境分析，推测该区石炭纪可能为滞后弧后盆地和弧后隆起区构造背景。4、进一步证明哈尔里克山不发育与岛弧演化相关的泥盆纪岩浆活动根据对代表性闪长岩和花岗岩的锆石SHRIMP年代学研究获得的新资料，结合该区已有相关资料的综合研究，确定哈尔里克山岩浆岩分别形成于奥陶纪-志留纪和石炭纪晚期-二叠纪，不存在泥盆纪的岩浆岩，进而认为该区泥盆纪不属于岛弧环境。5、重建了哈尔里克山古生代以来的地质演化过程根据区域资料以及本次研究所获得的资料，把哈尔里克山古生代以来的构造演化划分中奥陶世-早志留世为岛弧、中志留世-晚泥盆世为弧后区、石炭纪弧后伸展、二叠纪为后碰撞伸展与挤压、中生代差异隆升和晚新生代陆内再造山过程等构造阶段。6、初步估算了哈尔里克山地壳缩短率和缩短量根据前中生代地层褶皱估算的哈尔里克山南山口-口门子、石城子-白石头和沁城-小铺三条剖面的地壳缩短率分别为16.2%、19.8%和20.1%，相应的地壳缩短量分别为4.3km、9km和11.3km。

After extraction of the arc region from regions, the seed for an arc is obtained. By traversals for the graph, the seed arc grows by constrains for the same circle.

圆弧及圆的识别先从邻接图顶点中抽取圆弧域，作为种子圆弧，然后从此出发遍历图，按照同圆来建立路径，进行整弧和整圆增长，最终获得圆弧和圆的几何表达。

In this paper, used the 2-D optical fiber measurement system to investigate the whole process of arc movement, and the influence of the arc movement to the post current zero state of arc.

本文借助光纤测试系统从微观上研究电弧的运动全过程，分析电弧运动形态对电流过零后电弧状态的影响。

All methods of secondary arc extinction are directed toward reducing the magnitude of secondary arc current and recovery voltage, which in turn will reduce the extinction time of the arc and assure successful single-pole autoreclosure .

所有的用于熄灭潜供电弧的方法均可归结到降低潜供电流和恢复电压的幅值，进而减少电弧燃烧时间，保证单相自动重合闸的成功。

The lead-in voltage and out-of-line voltage of switchbox are detected and converted into frequency signal. The arc voltage signal can be obtained by measuring the two signals. The arc voltage signal and arc light intensity signal are sent to the advanced single-chip microcom puter, PIC16F877, to do synthetic analysis – judgment.

提取配电箱的进线电压和出线电压，分别转换成频率信号进行比较，获得电弧电压信号，并将其和弧光信号一起送入性能先进的PIC16F877单片机，做综合分析判断。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。