查询词典 arc

4There is not the electric arc ray radiation owing to the fact that burns down on the electric arc soldering flux layer.

由于电弧焊剂层下燃烧，没有电弧光辐射。

Vacuum interrupter is the core of high voltage vacuum switch. Because of the long contact gap, the axial magnetic field contact is widely used to generate stronger and evener AMF in the contacts' gap. It can reduce arc current density and arc energy, so its interrupting performance is improved.

高压真空开关的核心部件之一是真空灭弧室，由于其触头开距较大，因此多采用纵向磁场触头，希望触头间隙有较强且较均匀的纵向磁场，这样可降低电弧电流密度，降低电弧能量，从而提高开断性能。

Roundness tolerance of pitch diameter Roundness tolerance for a minimum of 345o circumferential arc of the pitch diameter shall not exceed .002 inch (0.051 mm) total, or one half the pitch diameter tolerance if the pitch diameter tolerance is less than .004 inch (0.102 mm); roundness tolerance of the remaining 15o maximum circumferential arc shall not exceed .004 inch (0.102) total, provided such tolerance does not result in excrescence on the thread flank.

圆度公差沥青直径圆容忍最低限度的345o圆周弧音高直径不得超过0.002英寸（ 0.051毫米）总，或一的一半，足球场直径公差，如果沥青直径公差小于0.004英寸（ 0.102毫米）；圆的耐受性，其余15o最大周弧不得超过0.004英寸（ 0.102 ），共计提供这样的宽容不会导致在excrescence对线程的侧翼。

The results show: when the eyes gaze at the 0° field of view, the lens can provide an 1-arcmin resolution. And Turning the eye and focusing on the 14° field of view, the lens can provide an 1.1-arcmin resolution.

MTF的评价结果显示：当眼睛注视0°视场时，系统达到1.1 arc minute的分辨率；当转动眼睛注视＋14°视场时，系统达到1.1 arc minute的分辨率。

The post-arc fulgurite current of low voltage current limiting fuse is studied. It is show that post-arc fulgurite current varies with breaking current.

对低压限流熔断器中的弧后残躯电流进行了研究，得出弧后残躯电流随开断电流大小变化而变化。

A set of equipment including a special shunt and a special amplifier are made up to measure the post-arc fulgurite current from which the post-arc fulgurite resistance is obtained.

本文通过自制试验设备测量熔断器中弧后残躯电流随时间变化的关系曲线，从而得到不同熔体材料采用不同的填充方法的弧后残躯电阻曲线。

The structures, features, application principles and on-site applications of six kinds of prevention products developed on the basis of above mentioned methods, i.e., the insulation striped arc-protection fitting, clamping post porcelain/ composite insulator, stab-type arc-protection fitting, stab-type clamping post porcelain/composite insulator, ring electrode MOA with external series gap and stab-type electrode MOA with external series gap, are presented.

分析了10 kV配电网绝缘导线雷击断线机理，归纳出"疏导式"和"堵塞式"2种防护思路，介绍了基于2种防护思路研制的剥线型防弧金具、放电箝位柱式瓷/复合绝缘子、穿刺型防弧金具、穿刺型放电箝位柱式瓷/复合绝缘子、环形电极带外串联间隙金属氧化物避雷器和穿刺电极带外串联间隙金属氧化物避雷器6种防护产品的结构、特点、应用原则及现场应用情况。

The welding equipment are advanced OTC,CO2,gas shielded arc welding and automatic submerged arc welding,semi-automatic cutting machine,250 ton liquid press,hobber and plate cutting machine.

焊接设备采用先进的OTC、CO2气体保护焊和埋弧自动焊、半自动切割机、250吨油压机、滚床设备、剪板机等。

Based on theories of hydromechanics, hydrokinetics and heat transfer, a three dimensional transient numerical model of flow and temperature field of the plasma arc welding molten pool with a moving arc is established.

本文根据流体力学、流体动力学及传热学理论，建立了运动等离子弧作用下焊接熔池流场、温度场的三维瞬态数值分析模型。

The eight major research topics are :①understanding coremantle processes, by deep drilling into a large oceanic plateau in the Western Pacific;②detailed investigation of material circulation during greenhouse Earth, and the transition process from greenhouse to icehouse environments, by drilling Cretaceous to Cenozoic sediments in the Pacific,③understanding the process of continental crust formation by deep drilling into oceanic arc,④Understanding the process of oceanic lithosphere formation by deep drilling of the back arc spreading system,⑤understanding of continentoceanatmosphere linkage, by drilling in the marginal seas and continental slopes of Asia,⑥investigation of the carbon cycle and the deep biosphere in accretionary prisms,⑦investigation of the mechanism and cycles of great earthquakes, tectonics, and mass circulation in convergent plate margins,and ⑧biology of extreme microorganisms living in deep accretionary prism environment.Keywords : Japan IODP Drilling Scientific goals.

其八项研究目标为：①钻探西太平洋洋底高原，认识核—幔作用过程；②钻探太平洋白垩纪—新生代沉积物，详细研究地球温室期间的物质循环及从温室环境到冰室环境的转化过程；③钻探大洋岛弧，认识大陆地壳形成过程；④钻探扩张的弧后，认识洋壳岩石圈形成过程；⑤钻探亚洲边缘海及陆坡，认识陆壳—洋壳—大气圈关系；⑥调查增生楔中的碳循环及深部生物圈；⑦调查汇聚板块边缘大地震周期及形成机制、构造及物质循环；⑧研究生活于增生楔环境中极端微生物生物学。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。