1) species differences
种属差异
1.
Species differences of muridae in the learning and memory behavior in morris water maze;
不同鼠种在Morris水迷宫学习记忆行为中的种属差异
2) difference in genera
种属间差异
3) specific concept plus differential
属加种差
5) dissimilar metal
异种金属
1.
The fine texture and microstructure of dissimilar metal joint was observed with microscope and shear strength of the joints was tested.
利用光学显微镜观察铜-钢异种金属堆敷接头的显微结构及显微组织构成。
2.
To evaluate the welding quality of the dissimilar metals of D6A and 20 steels by robot automatic welding with X-ray test,the testing processes were arranged reasonably according to the welding structure,and high quality testing on the elliptic multil-layer welds and accurate characteration of flaws were achieved by elimating disturbance of weld appearance.
针对D6A+20钢异种金属机器人自动焊焊缝质量的射线检测问题,从焊接结构入手,合理安排射线检测工艺,在缺陷评定中排除焊缝成形干扰,实现了该椭圆多层焊缝的高质量检测和缺陷的准确定性。
3.
On the basis of diffusion welding principle and characteristics, This paper introduces a general review of research and development of joining dissimilar metal and ceramic/metal.
本文在综述扩散焊接原理和特点的基础上,着重介绍了扩散焊接在异种金属、陶瓷/金属异种材料连接中的应用及研究现状。
6) dissimilar metals
异种金属
1.
Research and development on arc welding-brazing of dissimilar metals between aluminum and steel;
铝与钢异种金属电弧熔-钎焊研究与发展现状
2.
Numerical model has been created to simulate the joining of dissimilar metals.
采用数值模拟手段,分析了在搅拌摩擦焊接过程中不同材料的变形情况及其残余应力的分布,研究了材料变形与残余应力之间的关系,并建立了异种金属搅拌摩擦焊接的模型。
3.
The dissimilar metals joining between aluminum alloy LF2 and Q235 steel with electron beam welding (EBW) was investigated.
本文主要研究了LF2铝合金与Q235钢之间异种金属电子束焊接工艺。
补充资料:K理论中的差异元素
K理论中的差异元素
difference element in K- theory
K理论中的差异元家f击ffe代”茂d。帐川inK一价印叮;Pa3朋,a沁山“肠3月eMe“T .K一TeoP““] 群K(X,A)中的一个元素(这里(X,A)为一对空间,X通常假设为一有限胞腔空间(沈U川ar sPace),A为X的胞腔子空间),由一个三元组(古,叮,卯构造出来,其中心与泞是X上的同维数向量丛,乙:引,~川,为向量丛同构(这里司,是指x上的向量丛口限制在子空间A上的部分).差异元素的构成可按下述方式进行.先假定叮为平凡丛而且冲在X上已给定了一个平凡化.于是心给出了引,的一个平凡化,从而给出了群K(X/A)”K(X,A)的一个元素.这个元素与叮在整个X上平凡化的选择无关.对于一般情形,选择X上的向量丛。使得丛叮①‘为平凡的,并令三元素(亡,扮,幼对应于三元组(亡OJ,叮田口,乙田id『)所给出的元素.幻,E.P扣。撰
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条