后面板灰色插孔输入 Rear grey in
层孔虫灰岩 [岩] stromatoporoid limestone
珊瑚多孔羟基磷灰石 coral porous hydroxyapatite ; coralline porous hydroxyapatite ; CHA
灰孔雀雉属 Polyplectron
灰孔雀雉 Polyplectron bicalcaratum ; Grey Peacock Pheasant Polyplectron bicalcaratum
有孔虫灰岩 foraminiferal limestone
灰白脸孔 The Paleface
多孔羟基磷灰石 porous Hydroxyapatite ; hydroxyapatite ; multihole hydroxyapatite
落灰孔 ash hole
通过群孔抽水试验，改变了地下水的循环条件，使水质达到了生活用水导致标准，为此区奥灰水的综合利用打下了基础。
Through multiple Wells pumping, the groundwater circulation condition is changed, thus water is drinkable finally, and sets a basis of comprehensive utilization of Ordovician water in the region.
介壳灰岩层薄、致密、非均质性强，属低孔、低渗孔隙—裂缝性储层。
The shell limestone is thin bed, compact and anisotropism, so the reservoir is of low porosity, low permeability and pore fracture character.
此外，火山灰还可能堵塞散热孔，污染燃油系统，这都会显著地缩短发动机的使用寿命。
In addition, eruption jams possibly still medicinal powder hot aperture, pollute fuel system, this metropolis shortens significantly the service life of engine.
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