The mineral content of groundwater normally increases with the depth, but even quite shallow aquifers can be highly saline.

地下水的矿物含量通常随深度的增加而增加，但即使很浅的蓄水层中可能含盐量也很高。

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Iron nickel and silicate mineral content is quite (30% ~ 65%).

铁镍和硅酸盐矿物含量相当(30% ~ 65%)。

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The macroscopic nature of the mineral content, grain size, texture and color of rocks.

岩石的矿物成分、颗粒大小、结构和颜色的宏观性质。

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Without the fiber and the mineral content of that stalk fiber the soils become quickly depleted.

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"They've got a total heavy mineral content in them, which is ilmenite, rutile, zircon, " he explains.

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The laws have been designed to regulate vitamin and mineral content, to protect consumers from overdosing.

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