refined zone

基本解释

The technique of high precision trace neutron transmutation doping of detector grade high resistance zone-refined Si mono-crystal is introduced.
主要介绍探测器级特高阻区熔硅单晶的高精度微量中子嬗变掺杂技术。
The conclusion is, by using active flux, the structure of austenitic steel tube weld seam and heat affected zone is improved distinctly and grains are refined;
结果表明，活性焊剂的加入使奥氏体钢管焊缝及热影响区的组织明显改善，晶粒细化；
The nodes in the tensile stress zone are automatically refined and the influence domain of a node is defined according to the visibility criterion of a crack barrier.
开发的结点自动加密技术对坝体的拉应力区域进行自动结点加密，并根据可视准则确定无单元结点的影响域。