查询词典 arc-weld

Pass to expati at e the characteristics of segment double circular arc gear, introducing the appl ication of segment double circular arc gear in turbine compressor, It presented that segment double circular arc gear in the high speed and large deeply turbi ne compressor was necessary.

通过阐述分阶式双圆弧齿轮传动特点，介绍了分阶式双圆弧齿轮在透平压缩机中的应用，说明在高速、型透平压缩机中采用分阶式双圆弧齿轮是必要的。

We present two methods for generating a segment of circular arc by the vector valued continued fractions. Based on this method we construct a parametric rational arc spline that is GC〓 continuity. By adjusting the given tangent vector, this parametric rational arc spline also has convexity preserving property and monotonicity preserving property.

本文利用向量连分式给出了两种快速生成圆弧的新方法；在此基础上，本文还构造了一种GC〓连续的可调参数有理圆弧样条，在实际操作中，通过调整一侧端点的切向量，可使上述圆弧样条曲线保凸，保单调。

Our company's main products include: automatic submerged arc welder, CO2 shield welder, argon arc welder, manual arc welder, resistance welder, plasma cutter, contravariant welder and vacuum power source and crude oil heating power source, etc.

公司主要产品有：自动埋弧焊机、 CO2气体保护焊机、氩弧焊机、手弧焊机、电阻焊机、等离子切割机、逆变焊机及真空电源和原油加热电源等。

The intermediate-basic volcanic rocks with SiO2 content less than 57.48 wt% are high in Al2O3(20.22-16.34 wt%) and K2O, enriched in large ion lithophile elements, show obvious Nb, Ta negative anomaly, these are same to the basalts which formed in island arc. The andesite, dacite and rhyolite rocks with SiO2 content between 62.11-75.19 wt%, are similar with the I-type granitic rocks formed in island arc in their geochemistry. It is suggested that the Jueluotage area of East Tianshan was in island arc setting during Late Carboniferous, when the subduction of the ancient Asian Ocean was in progress.

其中w(SiO2)小于57.48%的中基性火山岩具有高w(Al2O3)(16.34%~20.22%)，较富钾，富集大离子亲石元素，具明显的Nb、Ta负异常；w(SiO2)介于62.11%~75.19%之间的安山岩、英安岩和流纹岩岩石化学特征与准铝质的Ⅰ型花岗质岩石相似，其地球化学特征也反映出岛弧花岗岩的特点，表明东天山觉罗塔格地区路白山一带在晚石炭世仍处于古亚洲洋向南俯冲的岛弧环境。

For the production of double boiler industry cycloid arc Gear series, double-arc cycloid involute gear tooth series, double cycloid arc Gear three series reducer is the slowdown in industry experts examine bodies comprehensive demonstration of the industry Reducer various features of the design of new models, it has a reduction ratio, low noise, high efficiency, long life, small size, light weight, style, new structure is simple, reliable transmission, less power consumption, easy operation and maintenance, and other characteristics, Is designed for the boiler industry with stereotypes products.

专为锅炉行业生产的双摆线圆弧齿齿轮系列，双摆线圆弧齿渐开线齿轮系列、双摆线圆弧齿行星三轮系列减速机是经减速机构行业专家考查论证综合各行业各种减速机特点设计的新机型，它具有减速比大、噪音低、效率高、寿命长、体积小、重量轻、样式新颖结构简单、传动可靠、耗电少、易操作维修等特点，是专为锅炉行业配备的定型产品。

When τ's value was less than 0.1, the HCVAW arc was exhibitive of diffusedshape with lower energy density instinct; and when τ's value was higher than 0.5,the arc was a fine-constricted arc with higher energy density.

在电弧电流密度超过临界值时，电弧自生磁场对电弧产生的收缩作用超过了电弧中各种粒子的扩散作用，HCVAW电弧由此而发生了形态上的转变。

Combining the discusses of flysch prototype basin which is called Baryan Har basin, we know that the Baryan Har basin is a large-scale back-arc basin resulted from intensively depression of back-arc area. It formed after tectonic setting transforms to pressure from extension and is at the same time as development of Yidun island arc.

同时，结合对沉积复理石的原型盆地——巴颜喀拉海盆性质的讨论，以为巴颜喀拉海盆是在松潘-阿坝地区构造背景由拉张转化为积存之后，在义敦岛弧发育的同时，弧后区强烈坳陷形成的大型弧后盆地。

The content of this course mainly include the feature, equipment, principle and application of high efficient welding method, for example, activating flux assisted TIG welding, narrow gap TIG welding, hot wire TIG welding, oscillating arc TIG welding, plasma TIG welding tandem MIG welding, hybrid arc welding, surface tension transfer MIG welding, oscillating arc MIG welding, mixed-gas MIG welding, two wire or more SAW welding, friction stir welding and laser-MIG hybrid welding, etc.

主要内容涉及到助焊剂TIG焊技术、窄间隙TIG焊技术、热丝TIG焊技术、摆动电弧TIG焊技术、等离子弧焊技术的基本原理、设备、特点和应用。双丝焊MIG方法、复合电弧技术、表面张力过渡、摆动电弧MIG、交流MIG焊、混合气体MIG焊的原理、特点、设备和应用。双丝以及多丝埋弧焊技术、窄间隙埋弧焊技术的原理、特点和应用。搅拌摩擦焊以及激光电弧复合焊接的原理、特点、设备、应用范围。

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. Several fuses with different fuse material are used to measure their post-arc fulgurite resistance.

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 results show that the Ni-Fe coatings are acid-resistant to HNO3 and H2SO4.For Ni-Fe alloys without exfoliation,the EIS is composed by a capacitive arc at high frequency and an inductive arc at low frequency, and the radius of capacitive arc decreases rapidly and the inductive component weakens and disappears with time.

结果表明：Ni-Fe合金镀层具有良好的耐酸腐蚀性；在3.5wt%NaCl溶液中，腐蚀发生之前的镍铁合金镀层的电化学阻抗谱由一个高频容抗弧和一个低频的感抗弧组成；随着浸泡时间的延长，容抗弧半径快速减小，感抗弧减弱并消失。

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。