level mining

eliminary research on the relation between oil-gas exploration effectiveness and exploration level.;

油气勘探成效与勘探水平关系初步研究

Analysis and Comprehensive Prevention and Cure the Pouring Water of Two Level in Mining Face;

二水平回采工作面涌水原因分析与综合防治

Talking about the reform of conveying system in the second level drift of Xinxing Coal Mine;

浅谈新兴矿五采区二水平运煤系统的改造

Experimental Study on Single-Phase Liquid Friction Factor in Rolling Horizontal Pipe;

摇摆状态下水平管中单相水的摩擦阻力实验研究

To transform GZY - 50 type rig into a horizontal rig, on the basis of its primary organs, especially the hydraulicpressure system, that meets the request of the horizontal rig.

在保持GZY -5 0型钻机的机构的基础上 ,将它改造成水平钻机 ,特别是针对它的液压系统进行改造 ,使之液压系统的功能满足水平钻机的要求。

Objective To investigate the horizontal transmission of viruse after inoculation with live attenuated hepatitis A vaccine.

目的　探讨甲型肝炎 (甲肝 )减毒活疫苗接种后的病毒水平传播。

This paper has proposed a method of intergration which can promote the comprehensive designing standard in course design.

本文提出一体化模式的教改方案,有助于提高课程设计综合水平。

Studies on Dietary Protein and Energy Levels and Its Effect on Productive Performance in Landrace-Yorkshire Hybrid Sows;

能量与蛋白质水平对长大二元杂母猪繁殖性能的影响研究

SOLO model is a theory structure to classify the observed learning outcome with main features of models of thinking and levels of complexity.

SOLO模型是对观察到的学习结果进行分类的理论框架,包括思维方式和复杂性水平两个关键特征。