钙质沉积物 calcareou ediments; calcareous deposits; calcareous sediments 硅质沉积物 siliceous deposits; siliceous sediment .
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The machine (1) has a magnetic field generator (31) for treatment of the water to reduce the formation of calcareous deposits in said hydraulic circuit.
该机器（1）具有用于处理水以减少钙质沉积物在所述液压回路中的形成的磁场发生器（31）。
The more recent calcareous, or calcium carbonate, deposits that make up the tufa formations are closer to the bottom and lighter in color.
钙质或碳酸钙越近现代，所构成凝灰岩地层的沉积物越靠近底部，颜色也比较浅。
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