查询词典 arc-weld

By experiment of arc movement process, the viewpoint that arc is split or unsplit into series arcs by deion plates is improved.

通过对电弧在不同结构灭弧室中运动情况的试验分析，提出了电弧能否分成短弧进入栅片的理论观点。

Fig. 2-9 Scanning electron micrographs of HDPE/pine-based WPC that was unweathered, 400-h xenon-arc-weathered, 2000-h xenon-arc-weathered, and 2-year exterior-weathered.

图2-9 HDPE/松木WPC的电子显微影像：无经耐候试验，经400 h氙弧灯耐候试验，经2000 h氙弧灯耐候试验，经2年户外耐候试验。

The power of its electronic transgression is 2.7ev, 40% less than that of pure tungsten electrode. With a low arc derivation voltage. It's easy to cause arc of high stability. Its current capacity is elevated 30% while its rate of burn spoilage drops low, making it more durable.

电子逸出功约2.7ev，比纯钨低40%，引弧电压低，易起弧，电弧稳定，载流能力提高30%，烧损率低，寿命延长。

There are no arc chutes and no arc by-products.

没有弧滑道和没有弧副产物。

The short circuiting transfer pulses in the CO_2 arc welding have a great interference to the signals processing of the arc sensor.

CO2气体保护焊的短路过渡脉冲对电弧传感器信号处理存在较大的干扰。

The effect of the arc-ultrasonic irradiation on the adhesion coaling was investigated by keeping the ultrasonic frequency constant and changing the voltage, using the coating prepared in the absence of the arc-ultrasonic irradiation as a reference.

喷涂过程中保证超声激励频率不变，改变超声激励电压，并与不加超声进行对比，研究了其对涂层结合强度的影响。

The unsuitable potential of the constricting nozzle is the essential reason of arc interference and double arc.

不利的喷嘴电位干扰是产生主电弧与维弧相互干涉和双弧的根本原因。

For Southwestern Margin of Aqikekule Lake ophiolite, their field geological, petrological, minerological, petrochemical and geochemical characteristics show that:① it outcropped as tectonic slices along the near west-to-east strike Kunzhong fault and is composed of metamorphic perodotties, cumulates and volcanic rocks, in which, chromites are distributed in the upper part of metamorphic peridotites as pods, or in the lower part of cumulates as near-strata;② metamorphic peridotites include serpentinites, chromite-bearing serpentinites, chlorite-epidote schists and chromitites, of which, chromitites have nodular and orbicular structure, and cumulates include pyroxenits, serpentinites, chromite-bearing serpentinites, chromites and metamorphically mafic rocks and only basalts are seen in volcanic rocks;③ Cr# of chromites suggest that they formed in the SSZ and Al〓O〓 and TiO〓 of metamorphic peridotites also suggest SSZ environment;④ metamorphic peridotites have V type and enriched LREE patterns, cumulates have from strongly depleted LREE, flat REE to enriched LREE patterns with universally striking positive Eu anomalies and basalts show flat REE or slight enriched LREE patterns with no Eu anomalies;⑤ trace element and Sm-Nd isotope characteristics of metamorphic peridotites imply their strikingly heterogeneous mantle character ε〓(t+4.39～+26.20 and later Nb, Ta fertilization;⑥ trace element characteristics of basalts and their tectonic diagrams show they probably formed in the rifted island arc or back-arc basin environment.

对阿其克库勒湖西南缘蛇绿岩，野外地质、岩石学、矿物学、岩石化学以及地球化学等特征表明：①该蛇绿岩以近东西向、沿昆中断裂呈构造岩片出露，由变质橄榄岩、堆晶岩和火山岩三个单元组成，其中见铬铁岩呈豆荚状产于变质橄榄岩的上部，或呈似层状产于堆晶岩的下部；②变质橄榄岩包括蛇纹岩、含铬铁矿蛇纹岩、绿帘绿泥片岩和铬铁岩等类型，其中，豆荚状铬铁矿具有结核状构造和球状构造，堆晶岩包括辉石岩、蛇纹岩、含铬铁矿蛇纹岩、铬铁岩和变质基性岩等类型，火山岩仅见玄武岩；③铬铁矿的Cr#表明其形成在俯冲带，变质橄榄岩的Al〓O〓和TiO〓成分也指示了SSZ环境；④变质橄榄岩的稀土配分型式见V型和LREE富集型两种型式，堆晶岩表现出从LREE强烈亏损、REE平坦分布到LREE富集的配分特征，并且普遍具有醒目的正Eu异常，玄武岩的稀土配分型式表现为平坦型或LREE略富集，无Eu异常；⑤变质橄榄岩的微量元素及Sm-Nd同位素特征指示了其地幔的显著不均一性ε〓(t为+4.39～+26.20以及Nb、Ta在后期的富集；⑥玄武岩的微量元素特征及构造图解表明其可能形成在裂谷岛弧或不成熟的弧后盆地环境。

According to the diagrams of AlZ-TiO2, Wo-En-Fs and An-Mg′, the amphibole gabbros are suggested to be generated at an island arc and the olive gabbros are formed in a back-arc basin setting.

根据AlZ-TiO2、Wo-En-Fs以及An-Mg′图解，结合其微量元素地球化学特征可以判断角闪辉长岩类形成于岛弧环境，橄榄辉长岩产于弧后盆地环境。

Some technical problems arose during the debugging of the accelerator. The ion source did not produce arc. The accelerator tube cracked. The control system was out of order. The transporting capacity of the charge belt degraded. The corresponding reasons were analyzed and some measures were adopted to solve the problems. The drawing voltage was raised to its predetermined position after the ion source produced arc and should be reduced to zero before turning off the accelerator. Transition flange was lathed and the accelerator tube was re-assembled. The control equipment at high voltage was shielded. TVS diodes were installed at the input and output ends.

调试中出现了离子源不起弧、加速管破裂、控制系统失灵和输电带输电能力降低等技术问题，分析了出现这些问题的原因，然后分别采取了相应的措施加以解决：变换工作流程，在每次关机前先把引出电压降为零，开机时等离子源起弧后再把引出电压升到预定值；对过渡法兰进行车加工，重新封装；对高压端的控制设备采取屏蔽措施，在输入、输出端使用TVS二极管，对控制软件进行抗干扰设计；对绝缘气体进行循环干燥等。

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。