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1)  Reweighting
二次称重
1.
Study on Theory and Application of Reweighting Electro-Hydraulic Control in the Loading System;
装车楼二次称重电液控制系统的理论与应用研究
2)  dyad symmetry
二重对称
3)  diad ['daiæd]
二次对称轴
4)  remelting
二次重熔
1.
The characteristics of structure evolution of ZL109 alloy in three procedures,the preparation of billets,the remelting process and semi-solid forging were investigated as well as the mechanical properties of the part.
试验研究了ZL109合金在半固态锻造成形过程中(坯料制备,二次重熔和零件成形)的组织演变及成形零件的热处理工艺和力学性能。
2.
The process of the raw billet casting, billet remelting, component forging and heat treatment were investigated and described in this article.
本论文重点介绍了两种铝合金原始坯料的制备、坯料的二次重熔、半固态锻造成形的工艺方法以及锻件的热处理方法,并对原始坯料的组织特点、坯料重熔过程中的组织演化特点以及成形零件的机械性能进行了比较和分析。
3.
The characteristics of structure evolution of wrought aluminium alloy 7050 in three procedures, the preparation of billets, the remelting process and the part forming, in the process of semi-solid forging and the mechanical properties of the part were investigated.
主要研究了变形铝合金7050在半固态成形过程中(坯料制备,二次重熔和零件成型)的组织演变及成形零件的热处理和力学性能。
5)  double opening and closing reconstruction
二次重建
1.
Aimed at resolving the problems of sensitivity to noise and over-segmentation existing in traditional watershed algorithm,a watershed segmentation scheme based on double opening and closing reconstruction and non-linear processing was proposed.
针对传统分水岭分割算法对噪声敏感和易于产生过分割问题,提出了一种基于开闭二次重建和非线性处理的分水岭图像分割方案。
6)  two-time duplex PCR
二重二次PCR
1.
Cytogenetic diagnosis on single lymphocyte of DMD patient with exon 50 deletion by two-time duplex PCR;
二重二次PCR对外显子缺失型DMD患者单淋巴细胞遗传学诊断的研究
补充资料:二次重熔
      一种精炼金属的方法。特点是:①用金属作原料,制成电极,借助某种热源重熔,在重熔过程中去除有害杂质和补加微量元素,金属基本成分不变;②于水冷结晶器内熔化金属,使凝固成成分均匀的金属锭,改善其结晶组织;③液态金属不与耐火材料接触,不受耐火材料沾染。二次重熔是获得高级优质材料的有效方法。
  
  二次重熔按熔炼热源可分为四类:①电渣重熔(ESR);②真空电弧重熔(VAR)(见真空冶金);③真空电子束重熔(EBR);④等离子弧重熔(PAR)(见等离子冶金)。各种方法的特征及比较见表。
  
  

参考书目
   傅杰等编著:《特种冶炼》,冶金工业出版社,北京,1982。
  

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