2) Yongcheng mining area
永城矿区
1.
The mechanics of water inflow from coal floor fissure in Yongcheng mining area;
永城矿区煤层底板裂隙灰岩突水机理
2.
The source of high fluorine content in groundwater and its geological structure factors in Yongcheng mining area;
永城矿区高氟地下水的氟源及其地质构造因素——永城矿区高氟污染地下水成因探讨之一
3.
1m in a coalmine of Yongcheng mining area.
永城矿区某矿排水钻孔设计孔深584。
3) Yongcheng coalfield
永城煤田
1.
The anastomosed fluvial depositional systems in the Permian coal measures of the Yongcheng coalfield,Henan;
永城煤田二叠纪网状河流沉积体系
4) Yongrong Coal Mine Area
永荣矿区
1.
Multiple Ways of Comprehensive Utlization of Gangue in Yongrong Coal Mine Area;
永荣矿区煤矸石的多途径综合利用
5) Yongxia mining district
永夏矿区
1.
Since 1992,the highresolution seismic explorations of working areas have been conducted successively in various mine shafts of Yongxia mining district.
１９９２年以来，永夏矿区各矿井相继进行了采区高分辨地震勘探。
6) Yongping mining area
永平矿区
补充资料：永城战斗
新四军在豫东永城反击日军“扫荡”的战斗。1939年3月下旬，日军出动汽车30余辆，骑兵数十名，进占河南省永城县县政府所在地龙岗；尔后由北向南进行“扫荡”，在永城西南大胡楼与新四军游击支队一部遭遇。激战半日，新四军毙敌80余名，击毁敌汽车3辆。残敌向陇海铁路各据点溃退。4月下旬，日军以装甲汽车30余辆、骑兵数百名，再度进占龙岗。新四军游击支队和地方武装与敌激战，予以重创。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条