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In this system we developed, according to spectrum of arc light and the relationship between arc, welding current and radiation, corresponding filter system is applied to filter ultraviolet radiation and part of visible light from arc light.

在系统中，鉴于弧光的光谱信息及其与焊接电流及电弧区国辐射之间的关系，采用了相应的滤光系统将强烈的紫外及部分可见光滤除，并将余留的光作为光源，通过CCD摄像机拍摄到了较稳定的近缝区图像。

A compact arc light sensor has been developed based on the spectroscopic study on the plasma arc.

在等离子弧发射光谱分析的研究基础上，研制了轻便实用的弧光传感器，采用普通光电器件和滤光镜片替代赘重昂贵的光谱分析系统，可以捕捉到表征小孔特征状态的信

The following studies have been done:① According to the technological requirements of CO2 shielded arc welding machine, a set of control system for are-welding inverter power supply is developed.

根据熔化极CO2焊机具有燃弧和短路两种工作状态，且两种状态下控制目标不同的特点，在控制系统中设计了双闭环反馈：焊接电压反馈及焊接电流变化率di/dt反馈。

Plasma arc welding is a new technology which is developed in recent years.

等离子弧焊接技术是近年来发展起来的机械零部件焊接新技术。

At first, the secondary developing technique of ANSYS is studied, parameterized modeling of arch dam system is developed .

研究了ANSYS二次开发技术，编制了拱坝参数化建模系统，实现了ANSYS对拱坝的快速仿真分析。

With hindlimb feathers, as well as flight muscles less developed than those of present day birds, Archaeopteryx may have found it difficult, if not impossible, to take off directly from the ground.

与后肢的羽毛，以及飞行肌欠发达，比那些现今的鸟类，始祖鸟可能发现很难，如果不是不可能的起飞，直接从地面。

Found in the Solnhofen Limestone Formation in Bavaria, Germany, Archaeopteryx lithographica possessed developed wings that probably allowed it to fly for short distances.

这是在德国巴伐利亚地区的石灰石中找到的，始祖鸟的化石发现引起轰动，揭露它的翅膀允许短暂的飞行。

For China Lake T naturalist for the museum developed Archaize Series pens, deeply domestic and foreign scholars and experts.

为中国湖笔博物为馆研制的仿古系列笔，深受国内外学者、专家的好评。

Products developed include childhood series, fashionable furniture series, archaize series, office series, the quality of these products have reached national standards.

公司开发的产品包括有儿童时代系列、时尚家具系列、仿古系列、办公系列等，这些产品质量均已达到国家标准。

Base on the study about precious metal mineralization and ore-controlling structures , it is realized that ductile shear zones, especially those developed in the Archean granite-greenstone belt, are the most important ore-controlling structures .

国内外贵金属与控矿构造研究表明，韧性剪切带，特别是发育在太古宙古老陆核花岗—绿岩地体中的韧性剪切带是最重要的控矿构造。

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。