1) moving top cover
活动顶盖
2) tip-lift type perforated plate
活动顶盖式多孔塔盘
3) relay valve top cover
继动阀顶盖
4) top coal activities
顶煤活动
5) roof movement
顶板活动
1.
On the basis of characteristics of the roof movement ( from the initial mining phase, the special area to the through phase) and the key parameters of the first and periodic loading distance, Huojitu Colliery has initially grasped the loading regularity of the 2 -2 roof, which provides the scientific gist for roof management in working face.
介绍活鸡兔煤矿首采工作面从初始开采阶段、特殊地段及收尾贯通阶段顶板活动特点和老顶初次来压步距、周期来压步距等主要参数,初步掌握2 -2 煤顶板来压规律,为工作面顶板管理提供科学依据。
6) movable roof
活动顶梁
1.
Through research about three years,this paper raises placing caving window on end beam,low caving changed,middle-low caving ,movable roof is established before head support,it gets purpose for improving "triangle caving" output and wood shed safely retrieve.
经过近三年时间的现场探索 ,提出了在尾梁上开设放煤窗口 ,由低位放煤改为中低位放煤 ,在端头架前增设活动顶梁的改进方案 ,达到了提高放“三角煤”煤量和安全可靠回收木抬棚的目
补充资料：活动顶蓬轿车
具有固定侧围框架的可开启式车身。车顶为硬顶或软顶，至少有两个位置：1.封闭；2.开启或拆除。可开启式车身可以通过使用一个或数个硬顶部件和/或合拢软顶将开启的车身关闭。4个或4个以上座位，至少两排。2个或4个侧门，4个或4个以上侧窗。
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