The growing samdwich is observed in these disfigurements.
在孔洞缺陷内部，均能观察到层状的生长结构。
This paper discussed a new structure of compound samdwich which is composed of foam with lower density and columned magnesite.
研究一种新型复合夹芯结构，即低密度泡沫芯材与菱苦土柱状结构复合芯材。
Traditionally, the geology structure is described by samdwich model, which can't meet the needs in complex prospecting area obviously.
传统上采用层状结构来描述地质模型，这对于复杂勘探区显然不能够满足需要。
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