An Experimental Research to Study the Microwaves transmission Characteristics of Ablating Material in Arc-Heated Plasma Flow

in this paper, an experimental research the effect of ablating material on the reflection and the transmission of microwaves in arc-heated plasma flow is presented by using the C band microwave measuring system. The results show that the ablating material with accidented surface and its high temperature have remarkably affected the reflection and the transmission of microwaves. The experiment proves that the system has outstanding precision and reliability.

龙口矿区2号煤层顶板粘土岩特征及研究意义

本文在详实调查和实验分析基础上，论述了2号煤层顶板粘土岩的特征，并指出了此研究在矿产综合利用和巷道工程管理中的实用意义。