也就是说，这些组织结构是由不溶性无机盐结晶结合到蛋白基质里而成，这些无机盐多以碳酸钙或磷酸钙形式存在。
That is, they incorporate crystals of insoluble inorganic salts, most often calcium carbonate or calcium phosphate, in a matrix of protein.
采用合金电极，可以有效克服不溶性金属醇盐在阳极的吸附问题，并同时合成几种金属醇盐，从而提高反应的电流效率。
Using alloy as anode may be recommended as a technique for the synthesis of alkoxides, this process can run in sufficiently high current efficiency and high reaction activity.
钢材表面应无可见的油脂和污物，并且没有附着不牢的氧化皮、铁锈和油漆涂层及其它杂质（水溶性盐和焊接残渣）。
Steel surface should be no visible grease and dirt, and there is no attachment not firm scale, rust, paint and other impurities (water soluble salt and welding residue).
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