保地作业
High-forest with soil protection wood
复杂地区地震工作方法
techniques of seismic survey adopted in ares with complex conditions
集装箱码头作业区
operation area for container terminal
矩形作业区
rectangle minesweeping area
跨区作业
Inter-district operation
Cross-regional Work
customer service orientation homework
transregional work
trans-regional operations
multi-areas work
harvesting wheat across different countries area
农机跨区作业
The trans-regional harvesting of the agricultural machinery
trans-regional work of agricultural machinery