1) gradual sagging roof
缓慢下沉顶板
2) roof descending
顶板下沉
1.
To solve the existing problems of most roof descending monitors such as heavy workload of data collection and unable to upload roof descending data to surface, the paper proposed a design scheme of remote transmission system of mine roof descending signal.
针对目前大多数顶板下沉监测仪存在的数据收集工作量大、顶板下沉数据无法上传地面等问题,文章提出了一种矿井顶板下沉信号远程传输系统的设计方案,详细介绍了系统的工作原理、数学模型,并确定了关键参数,同时给出了系统硬件电路设计。
3) roof convergence
顶板下沉量
1.
The law of roof convergence along with engineering practice changes were analysised.
研究了顶板下沉量随着不同工程实际情况变化的规律,分析了工程节理特征对巷道围岩稳定性的影响。
4) roof step
顶板台阶下沉
1.
This paper introduces the successful experience of over roadway extraction in complex geology that has roof step,face roof collapse with cavity,passing through fault etc.
介绍了135采煤队在顶板台阶下沉、漏顶、压力大、过断层等复杂地质因素影响下,跨巷道高档普采成功回采的经验。
5) secular subsidence
缓慢沉陷
6) slow drift
缓慢沉降
补充资料：β氧化铝单晶生长台阶
β氧化铝单晶生长台阶
蘸义簇袋鬓戮雄髯绪价韧 日氧化铝单晶生长台阶〔背散射电 子象)
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