fresh-air school;open-air school是什么意思

网络释义

用法例句

Road dust formation and suppression in an open pit;

露天矿公路扬尘机理及抑尘

Safety management jobs of refuse dump in open pit mine at Jianshui Manganese Mine are introduced from the aspects of mine mining, mine situation, choice place of refuse dump, expecting social and economic benefits etc.

文章从矿山开采简介,矿山现状、排土场的选址、预期社会效益与环境效益等方面介绍了云南建水锰矿露天矿山排土场的安全管理工

Analysis of factors influencing open-pit mine productivity;

影响露天矿生产能力的因素分析

Application of millisecond blasting technology in Lanping open-pit mine;

微差爆破技术在兰坪露天矿的应用

Methods of object-oriented and center structure of truck optimized dispatch in open-pit mine;

露天矿卡车调度系统结构及面向对象实现方法

Overview of road dust suppressants in open pits;

露天矿山运输路面抑尘剂的研究与综述

Based on the analysis of causes on which the blasting boulder occurs in borehole blasting of the limestone open pit,the paper determined some measures of lowering boulder yield of borehole blasting operation in the limestone mining open pits by borehole parameters,taking explosive specific charge,charge structure,millisecond interval and detonating into design of blasting program.

对石灰石露天矿山台阶深孔凿岩爆破中大块产生原因进行了分析,并从穿孔参数、炸药单耗、装药结构、微差间隔、起爆方式等方面,提出降低大块率的技术措施,在实践中取得较好的爆破效果。

This paper addresses the methodology of introducing risk into the development of mine plans for open pit mines.

本文介绍了在露天矿山规划的制定中引入风险的方法论。

Research on the F4 shear-zone coal wall extraction in Lingquan open-pit coal mine;

灵泉露天煤矿F4断层带煤壁回采研究

Wujiata open-pit coal mine is the main coal enterprise of Shendong tianlong group CO.

武家塔露天煤矿是神东天隆集团有限责任公司的重要煤矿企业,根据企业发展的需要、煤矿地质条件、市场销售条件等,确定该矿合理的生产能力为300万ta,目前设计生产能力为60万ta,采煤工作线长度600m左右,不能满足生产能力扩大的要求。

thoroughly analysed of the current situation and problems which are exsitting in the local digital open-pit coal mine, expounded the necessity, urgency and advantage on applying the digital open-pit coal mine, putting forward the total function and implemented countermea-sure of digital open-pit coal mine, discussed the total frame and established methods of the digital open-pit coal mine.

通过对国内露天煤矿信息化现状及存在问题的深入分析,阐述了实施数字露天矿的必要性、紧迫性和有利条件,提出了数字露天煤矿的总体功能和实施对策,论述了数字露天煤矿的总体构架及其建立方法。