给出煤炭生产中辅助作业用钢丝绳的定义及其涵盖范围。
To give out definition and covering scope of wire rope for assistant work in coal production.
掘进工艺包括主要作业和辅助作业,其中主要作业包括破岩、装岩、运输、支护,辅助作业包括通风、铺设轨道、挖掘排水沟、铺设管线等等。
The excavation technique consists of main operations including breaking, loading, haulage and support, and auxiliary work including ventilation, laying the track, digging ditches and laying pipes etc.
该设备的研制成功可使易磨损工作部件的使用寿命提高3~4倍,可从人力、物力、电力等方面大大降低工业成本及辅助作业成本,降低劳动强度,提高生产效率。
Life expectancy of work part can be increased by 3 to 4 times. The new system can offer end user excellent cost effectiveness in human labour, electricity. material and maintenance, etc.
I give homework as a learning aid.
我的作业是作为学习辅助的。
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