Comparing with Roles and Effects of Repetition Ground and Equipotential Coupling;
重复接地和等电位联结中一些问题的探讨
Through the improvement of the SSJ650 type belt conveyor and 40T type scraper conveyor, together with the selection of a simple, convenient strut bolt coupling device among many choices, the two kinds of conveyors are enabled to be applied together, reducing the intermediate transferring processes, raising the coal mining productivity, and cutting down the per ton coal cost.
带式输送机具有许多优良的性能 ,通过对SSJ6 5 0带式输送机和 4 0T刮板输送机的改进 ,并通过多种联结方案的选择 ,提出了一种结构简单 ,使用方便的支柱螺栓联结装置 ,使两者配合使用 ,减少了中间转载环节 ,提高了采煤生产率 ,降低了吨煤成本。
Characteristics of Overcurrent Protection for Distribution Transformer with Dyn11 Connection;
Dyn11 联结配电变压器过电流保护的特点
the dynamic viscoelasticities of epoxy resin cured with various active esters were determined, and thecrosslinking densities and the crosslinking densities and the crosslinking structures were investigated.
通过改变环氧树脂与固化剂活性酯的配比，测定了不同密度固化树脂体的动粘弹性，研究了固化树脂的交联结构。