眉山市芒硝矿以含钙量高、 矿物晶体较大、埋藏浅、规模大为特点，目前采用洞室水溶法开采。
The Meishan mirabilite ores are characterized by high Ca content, large mirabilite crystalline, shallow occurrence depth and giant reserves.
胃药常含有高量的钙，若罹患钙结石，则服用胃药时应选择含钙量较少的品牌。
Five, the stomach medications often contain high amounts of calcium, and if one has calcium stone, the stomach when taking medicine should choose the less calcium content in the brand.
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