exploitation of one's unfavorable position

The main specs,structures and existing problems of wire rope for silo coal tub way,device for workers built on stilts in inclined well,balance,brake for drop-proof apparatus in assistant work of coal production are introduced in detail.

详细介绍煤炭生产中辅助作业用竖井罐道钢丝绳、斜井架空乘人装置用钢丝绳、平衡钢丝绳、防坠器制动钢丝绳的主要规格结构及使用中存在的问题,结合《煤矿安全规定》提出科学选择和使用该类钢丝绳的建议。

Based on the approach of the method of demarcating ceritre line during installing mancar at the third level of inclined ventilation shaft in Zhuzhuang Coal Mine,provides a development thinking for the sam project.

通过对朱庄矿三水平进风斜井安装乘人器时中腰线标定所采取的方法进行探讨,为设备安装过程中中腰线的标定工作拓开思路。

The Changes of Leve1 of Hematocrit and ECG in Driver Between 3080m and 5072m Altitudes;

高海拔跨度运输司乘人员红血球压积与心电图变化及相关性