1·The effects of hexanedioic acid, sebacic acid and oxalic acid on floatation performance of feldspar and quartz were investigated.
研究了己二酸，癸二酸和草酸对长石和石英浮选性能的影响。
2·This stone is actually quite rare and difficult to cut, so in many cases other types of rock were used as substitutes, for example green feldspar, basalt, and serpentine.
这个石头实际上相当稀罕和难于切割，因此在许多情形里其它类型岩石被当作代用品使用，例如绿长石，玄武岩和蛇纹石。
3·Symbiosis with acidic potassium feldspar, plagioclase, biotite.
与钾长石、酸性斜长石、黑云母共生。
4·No cleavage is and feldspar difference, can not see the twin, and no oil sheen weathering products.
与长石的区别在于无解理，看不到双晶，油脂光泽和无风化产物。
5·This stone is quite rare and difficult to cut, so in many cases other types of rock were used as substitutes, for example green feldspar, basalt, and serpentine.
这个石头实际上相当稀罕和难于切割，因此在许多情形里其它类型岩石被当作代用品使用，例如绿长石，玄武岩和蛇纹石。