The characteristics of small faults are coarctation and zonation with clear direction.

小断层具有密集成带的特点,且方向性明显,成为影响煤矿生产的主要地质因素.

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Morphology and cytohistological zonation appeared different between cone apex and the vegetative shoot apex.

雌球果原基与营养茎端在外部形态及内部细胞组织学分区结构有明显差异.

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Both weathering crust zonation and quality classification of rock mass are important for shallow - buried tunnels.

风化壳分带和岩体质量分级对浅埋隧道设计和施工很重要,需对这两套系统定性和定量指标做平行判别.

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