The physics and chemistry instruments on spirit have determined the soil, shown above, contains a high content of salts including iron - bearing sulfates.
精神号上的物理和化学设备已经检测了这些土壤，如上图所示，土壤中富含了盐份包括含铁的硫酸盐。
About 80%, 97% of total impurities and sulfates and 60% of iron contained impurities were rejected by the membrane process.
膜分离对硫氰酸钠中的总杂质、硫酸根和含铁杂质的去除率约为80%，97%，60%。
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