sheet sand

As for the gravel swept into the grottoes, it is exactly like a large sheet of sand paper that is at all times rapidly rubbing the fragile murals.

至于卷入窟内的沙砾，则象一张硕大的砂纸，无时不在对脆弱的壁画慢慢打磨。

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We can cooperate on this sheet has a rough, osteoporosis , and triothylaluminum grains of sand.

不梢厂这不主所拔取的纸张粗劣、紧密 、 有沙粒, 且添加物较众.

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The frontal sheet sand and far bar sand are relatively poor.

远砂坝及前缘席状砂则相对较差。

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The reservoir quality of bank of river facies, distributary channel of shallow delta, distal bar and distal channel of delta front, sand sheet, overbank of terminal fan take second place.

河流相堤岸亚相、浅水三角洲分流河道、三角洲前缘远河道与远砂坝、前缘席状砂、末端扇河道漫溢相储层物性次之。

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