ground limestone meaning in English

细磨石灰石粉
重质碳酸钙

Soil acidity can be corrected in a much shorter period compared to ground limestone
所需时间更短，所以在一些国家和地区仍然偏爱使用它。
The two constituents were compatibilized in - situ by mechanochemical reactions induced by pan - milling and the microstructure of the blend can be controlled conveniently by adjusting processing conditions . polyamide 6 / ground limestone powder ( pa6 / caco3 ) and polyamide 6 / silicon dioxide ( pa6 / sio2 ) composites were also prepared through this method . those pa6 blends and composites exhibit improved microstructure and superior mechanical properties to the systems mixed by conventional mixing methods
研究了磨盘碾磨对尼龙6的粉碎机理，制备了就地增容、微相结构可调的聚丙烯/尼龙6 ( pp / pa6 )及尼龙6 /碳酸钙( pa6 / caco _ 3 ) 、尼龙6 /纳米级二氧化硅( pa6 / nano - sio _ 2 )共混复合材料，各体系混合效果、微相结构及力学性能均明显优于采用传统混合设备制备的试样。