A method in which a data base and regression will be employed has been studied for predicting weld bead shape and selecting optimum welding parameters in arc welding processes.
本文研究了一种使用数据库及回归分析技术在电弧焊中预测焊道形状及选择最佳焊接参数的方法。
The core consists of 140 base pair of DNA wrapped around a globular histone bead containing two each of histones H2A, H2B, H3 and H4.
核小体核心由140个碱基对的DNA围绕一个组蛋白小球组成，每一个组蛋白小球包含两个H_2A、H_2B、H3和H4的四聚体分子。
As the bead moves toward the magnet, the DNA strand passes through nano-sized opening slowly enough that its base pairs can be read.
当铁珠被吸向磁铁，DNA链便会缓慢的通过纳米大小的开口，其碱基便可被读取。
The acrylic resin expanded beads of the present invention are expanded beads in which an acrylic resin serves as a base resin, and the bead surfaces have continuous ridges in a mesh pattern.
本发明的丙烯酸类树脂发泡颗粒是以丙烯酸类树脂作为基材树脂的发泡颗粒，其特征在于在颗粒表面具有网眼花纹状连续凸条。
The microhardness of the weld bead reduces from the center of joint to base metal before and after heat treatment, and the microhardness of HAZ is minimum.
热处理前后焊缝截面显微硬度均自焊缝中心向热影响区逐渐降低，热影响区显微硬度低于母材。
The microhardness of the weld bead reduces from the center of joint to base metal before and after heat treatment, and the microhardness of HAZ is minimum.
热处理前后焊缝截面显微硬度均自焊缝中心向热影响区逐渐降低，热影响区显微硬度低于母材。
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