The Qinjiamiao Group in the Yangtze Gorge area is mainly composed of thin-bedded dolostones.
三峡地区覃家庙群以一套缺乏化石的薄层白云岩沉积为特征。
Soft and thin-bedded characteristics and dynamic load action from mining and blasting shock are some basic features of the actual mining roadways in coalmine.
围岩松软、呈层性显著以及受爆破震动和开采动载的反复作用是回采巷道的基本特征。
The upper part is a set of evaporite quasi-tidal sequence with clear cycles which is made up of middle-thin-bedded, gypsum-bearing muddy limestone and dolomicrite.
上部为中薄层状富泥的含石膏质夹层的泥质泥晶灰岩、微晶白云岩组成的旋回性清楚的似蒸发潮坪层序。
The Pleistocene superficial geology comprises well-bedded sandy gravels with occasional thin beds of sand.
更新世浅层地质为层状砂质砾石，偶有细沙层。
These folded rocks are composed of medium to thick bedded limestone of Ordovician and of thin bedded shale and siltstone of Silurian.
这些褶皱岩层是由奥陶系的中层至厚层石灰岩以及志留系的薄层页岩和粉砂岩组成。
The technique is also suitable for the study of thin and inter-bedded reservoirs.
本方法也适用于薄互层储层的研究。
The technique is also suitable for the study of thin and inter-bedded reservoirs.
本方法也适用于薄互层储层的研究。
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