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College of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081, China

北京理工大学机械与车辆工程学院，北京100081

School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081

北京理工大学机械与车辆工程学院，北京 100081

School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing 100081,China

北京理工大学机械与车辆工程学院，北京 100081； 2。天津军事交通学院汽车工程系，天津 300636

School of Mechanical Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China

北京理工大学机械与车辆工程学院机械制造及自动化系，北京 100081

School of Vehicular Engineering,Beijing Institute of Technology,Beijing 100081,China

北京理工大学机械与车辆工程学院|北京 100081

School of Mechanical and Vehicular Engineering, Beijing Institute of Technology, Beijing, 100081, China

北京理工大学宇航科学技术学院北京， 100081； 2，北京理工大学机械与车辆工程学院，北京，100081

Shanghai Institute of Mechanical ＆ Electrical Engineering,Shanghai 200040,ChinaAbstract: With the development of pulse arc welding,especially to foretime some material with high heat tenderness difficult to weldthe situation difficult to weld(such as full position welding,narrow gap welding,and the pipe,thin workpiece need singlefaced welding to make doublefaced moulding).

脉冲弧焊工艺的发展，特别是对一些难焊的、热敏感性高的材料和难于施焊的场合(如全位置焊、窄间隙焊以及要求单面焊双面成形的管件、薄件)，脉冲焊均显出独特的优越性。

Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA

与原始的微生物相比，这种做法使得大肠杆菌产出的番茄红素是前者的5倍之多。

Ms. Xu Yanzhen whose speciality is Garment Design and Engineering, graduated from Beijing Institute of Clothing Technology. She joined Aimer in 1998 and has become one of the leading designers. Nowadays, Ms. Xu is the chief designer for our luxurious brand—LA CLOVER.

许彦贞，毕业于北京服装学院服装设计与工程专业，1998年至今就职于北京爱慕内衣有限公司，先后任爱慕品牌、LA CLOVER品牌设计师，现任公司旗下奢华品牌LA CLOVER高级设计师。

Hongxin Wu (Beijing Institute of Control Engineering, CASC), Proper Positioning, Facing Up to the Chal

相关学术期刊主编提供成功撰写和在国际重要学术期刊发表科研论文的方法和要

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。