高抗压强度的硬地层，如硬石灰岩。燧岩。硬砂岩。石英岩。石英砂。玄武岩。花岗岩等极硬岩层。
Medium hard formation with high compressive strength. Such as limestone, taconite, blaize, quartzite, silica sand, basalt, granite ect.
改建的原则是尽可能多地保留房屋的原始建筑特色，所以建筑师对建筑的硬砂岩墙、坡屋顶和前门廊进行了修复。
The aim was to preserve as many of the house's original architectural features as possible, so the architects restored the building's hard sandstone walls, gabled roofs and front porch.
高抗压强度的中硬地层，如硬页岩。石灰岩。砂岩。白云岩。和硬石膏。大理石。
Medium hard formation with high compressive strength. Such as hard shale, limestone, sandstone, dolomite, anhydrite and marble.
随着找矿方向和目标类型从硬岩转移到可地浸砂岩型铀矿，如何改进数据处理方法和异常分析方法就日益紧迫起来。
With the change of prediction type from harder rock to in-situ leachable sandstone-type uranium deposits, it is urgent to improve the data processing method and abnormal analysis method.
随着找矿方向和目标类型从硬岩转移到可地浸砂岩型铀矿，如何改进数据处理方法和异常分析方法就日益紧迫起来。
With the change of prediction type from harder rock to in-situ leachable sandstone-type uranium deposits, it is urgent to improve the data processing method and abnormal analysis method.
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