Like metal-organic frameworks, birnessite is riddled with tiny holes that allow air to move around inside it, to maximise adsorption.
和金属-有机骨架一样，水钠锰矿布满了小孔，空气可以在里面流动，最大限度地吸附。
Birnessite
原声例句
经济学人（汇总）
英语百科
Birnessite
Birnessite (Na0.3Ca0.1K0.1)(Mn,Mn)2O4 · 1.5 H2O is an oxide mineral of manganese along with calcium, potassium and sodium. It has a dark brown to black color with a submetallic luster. It is also very soft, with a Mohs hardness of 1.5. Birnessite is formed by precipitation in lakes, oceans and groundwater and is a major component of desert varnish and deep sea manganese nodules.
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