我们在奥斯陆机场等了好几个小时，知道飞机找到了几个灰洞才飞过去。
We were stranded at Heathrow Airport for hours until the airline found some ash hole to fly through.
重点讨论在AODV协议下的黑洞攻击和灰洞攻击，并根据攻击的特点，提出了一种利用虫洞原理防御的策略。
The black hole attack and the gray hole attack on the networks running under the AODV protocol are discussed.
外喷的气体将大量的灰尘和火山灰带入空中。数以吨计的火山灰，在地球的这个洞的周围，形成一个锥体。
The out-rushing gases carry up into the air huge amounts of dust and ashes. The tons of ashes form a cone around the hole in the earth.
由于地下水潜蚀、化学溶蚀等作用，灰岩地区溶洞、土洞较为发育，给桩基施工带来较大困难。
By the action of groundwater erosion and chemolysis, cavities are well developed in limestone area, which causes many problems for pile foundation construction.
四川盆地下二叠统灰岩储层中，较大储量缝洞系统以东吴期暴露溶蚀形成的管道状溶洞系统为主要储集空间。
The tubular cave system resulted from erosion in Dongwu stage are the main reservoir space of Lower Permian limestone reservoirs in Sichuan Basin.
泸州地区茅口组灰岩岩溶分为三种类型：层间古岩溶、阳顶古岩溶、缝洞系岩溶。
The Karst system in Maokou formation (P) is classified into three different types: intraformation paleokarst, Yangxin surface paleokarst, and fissure-cavern system karst.
盘石水库泄洪洞、导流洞所涉及的岩体为寒武系下统灰、页岩互层层状岩体。其中页岩对洞室的稳定起决定作用。
There are mutual samdwich rock of Cambrian limestone and shale in Pan-shi reservoir's to piloting water tunnel and flooding water tunnel, in which the shale is decisive to the tunnel stability.
盘石水库泄洪洞、导流洞所涉及的岩体为寒武系下统灰、页岩互层层状岩体。其中页岩对洞室的稳定起决定作用。
There are mutual samdwich rock of Cambrian limestone and shale in Pan-shi reservoir's to piloting water tunnel and flooding water tunnel, in which the shale is decisive to the tunnel stability.
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