工作面支护 meaning in Chinese

face support
face timbering

The support power of the trend longwall coal face
走向长壁高档采煤工作面支护力
Graphical symbols for use in technical documentation of coal mine machinery - graphical symbols for coal face support machinery
煤矿机械技术文件用图形符号采煤工作面支护机械图形符号
The business scope of tiandi science & technology co . , ltd . are the product and sale of electricity product , mine electricity products ; the design and contract of underground project , coal cleaned and chosen project , coal comprehensive usage project , environmental protection project and net work project , mine construction and the design of production system , technology promotion , consultation , contract and service of external project
简介：天地科技股份有限公司主要技术和产品包括：采煤机，掘进机，全矿井综合自动化系统，计算机软件技术，矿井提升机自动化控制，煤矿装车、配煤、计量自动控制系统，液压支架电液控制系统，液压支架设计与开发；煤炭洗选设备；煤矿建设项目的设计、咨询和工程总承包，地下建设施工程，建筑物加固技术与材料；煤炭开采，特殊采煤技术，煤矿锚杆支护成套技术与设备，工作面支护技术，综采工作面自动监测技术。