Densely sintering of dolomite ore is difficult because decomposing of carbonate results in forming porous structure during calcining process.

由于白云石在煅烧过程中碳酸盐分解后形成多孔疏松结构，使其难以烧结致密。

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Calcareous tufa, a porous or spongy deposit of calcium carbonate found in calcareous mineral springs.

多孔状凝灰岩石灰质的凝灰岩，碳酸钙多孔或有吸收性的沉淀物，出现在。

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The carbonate fractured reservoir is different from porous sand reservoir with its own unique pore space structure.

碳酸盐岩裂缝性储层以其自身独有的孔隙空间结构而区别于孔隙性砂岩储层。

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Sea coral naturally contains calcium carbonate and possesses a porous architecture not unlike natural bone.

BBC: Coral heals serious fractures