overprep.在 ... 的上方；遍及地；在 ... 期间adv.穿过；完全覆盖；结束；落下n.(板球中)每个投球手一次连续所投出的球数overjoltvi.过量吸毒；尤指海洛因(毒品相关用语)；n

1. The overlying strata movement is a complicated dynamic process.
   摘要矿山开采引起上覆岩层的移动是一个复杂的动态过程。
2. By the analogy simulation tests on Xingtai mine, the failure characteristics of overlying strata and its displacement regularity are studied.
   笔者是通过相似模拟试验对邢台矿的煤层上覆岩层破坏特征及其位移变化规律和顶板的应力变化规律进行了研究。