In this paper, the effect of the thermosiphon, insulation board and awning in cooling the permafrost roadbed base was si......

The existing design of the pumping systems mainly focuses on the approximate computational formulae and procedures,which......

Based on the measuring data of underwater blasting vibration and the regression analysis results of these data, two form......

Chinese materia medica(CMM),including Chinese herbal,animal,and mineral medicine,has been widely researched in the past ......

Theoretical α-decay half-lives of the heaviest nuclei are calculated using the experimental Qα value. The barriers in ......

A fully-mechanized coal mining (FMCM) technology capable of filling up the goaf with wastes (including solid wastes) is ......

为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

At first one of g-inverses of A(×)I_n + I_m(×)B~T is given out, then the explicit solution to matrix equation AX + XB ......

针对理工科课程传统的教学方法存在的问题,提出了一种新的教学方法--模糊教学法.模糊教学法有两条原则:第一,以基本概念和基本原理......

针对河南油田注聚区不能采用常规酸化及有关解堵费用高、效果不佳等问题,在前期综合研究及室内试验的基础上,研制出了适合油藏特点......

论述了ＰＶＣ柔软革的生产技术和工艺配方，重点介绍ＰＶＣ树脂、增塑剂，发泡剂，填充剂，稳定剂，表面处理等原材料品种及揉纹工艺对柔软革质量的影响，并......

This is an observation by the daily deliberation of China major consuming force-female,which should be a great master pi......