电弧

Since the production of carbon nanotubes synthesized by arc-discharge method contains impurities such as carbon nano-particles, amorphism carbon and graphite fragment, several purification methods were used to purify carbon nanotubes. It is found that with oxidation method in air, we can easily get purified carbon nanotubes.

由于用电弧放电法合成出来的纳米碳管产物中除了有纳米碳管外，还含有一些纳米石墨颗粒、无定形碳和石墨碎片等，因此本文对用电弧放电法合成出的纳米碳管进行了多种方法、探索性的提纯研究，实验结果发现，利用大气氧化法对纳米碳管进行提纯效果好，设备简单，是一种方便实用的方法。

In this paper, the technique of pinch sealing for the arc tube of metal halide lamp s is introduced.

本文介绍了金属卤化物灯电弧管压封工艺技术，同时还介绍了一种先进的半自动金属卤化物灯电弧管压封设备。

The arc voltage signal and arc light intensity signal are detected in order to get fault arc reliably.

为可靠地检测出低压配电箱中的故障电弧，分别对电弧电压信号和弧光信号进行了检测。

In addition, The transfer property of arc light in the surrounding atmosphere around the arc column was measured and the distribution of arc light intensity and some characteristic signals was obtained.

另外，对弧焊过程弧光在电弧周围空间的传输进行了检测，获得了弧光强度及一些特征量在电弧周围空间的分布规律。

ABSTRACT A chain arc model is set up for magnetic field driven arc in arc chamber of low voltage circuit breaker in the paper.

针对低压断路器灭弧室中的磁驱电弧建立了链式电弧数学模型。

Pure tungsten also provides good arc stability for AC sine wave welding, especially on aluminum and magnesium, but is not typically used for DC welding (it does not provide as strong of arc starts as thoriated or ceriated electrodes).

纯钨还提供良好的交流正弦波焊接电弧稳定，特别是对铝、镁、但并不是一般用于直流焊接(不提供强劲电弧或开始为thoriatedceriated电极)。

One is the research of the arc model...

一个是对电弧模型的研究，主要为磁场作用下空气中运动的电弧建立数学模型。

In this paper,a study is given to the relationship between vacuum arc current and axial magnetic field keeping the vacuum arc diffuse,a formula of the relationship is deduced.

本文研究了真空电弧与使其保持扩散型的纵向磁场间的关系，并得出了电弧电流与纵向磁场间的关系式。

The results indicate that electric erosion of contact wire by static arc and moving arc varies from one another.

结果表明，静止电弧和运动电弧对接触线的电气侵蚀程度不同。

The piccolo injector is used in the electrothermal -chemical launch experiments. The character of plasma generator surrounded by high-temperature and high-pressure gas is summarized.

通过自由喷射实验与密闭环境实验，检验了各种中心电弧等离子体发生器的工作性能，确定了保证中心电弧等离子体发生器可靠工作的放电条件、材料性能和结构特征参数。

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。