查询词典 packing fraction

In order to make these silver paste successfully used in commercial, a clear understanding is required for the complex relation between different parameters such as particles size, solid volume fraction, packing density on suspension printing and deformation and the mechanism of silver powder sintering shrinkage and the inorganic adhesive effect under the batch manufacture condition.The main emphasis of our researches was to improve the silver paste properties by developing a reliable, screen-printing paste suitable for fine lines and lower sintering porosity and good interface between thick film and glass substrate.

为开发电学性能稳定、高导电率、具有良好细线印刷性能及优良附着性的高性能电子浆料，本研究着眼于对影响参数进行详细剖析，找到关键控制参数，通过研究微观结构与粉末参数的对应关系，找到如何能制备出具有致密的厚膜结构与较低的孔隙率，并且其浆体与有机载体的界面区也要有明显的改善的电子浆体；同时对批量生产的银粉的形态与粉末烧结反应的收缩现象，无铅玻璃体系对银膜致密化等过程进行研究，获得致密高导的无铅银浆料。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。