pitch column中文什么意思

沥青柱

• pitch:    vt. 1.扔，投，抛，掷；【棒球】 ...
• column:    n. 1.【建筑】圆柱；圆柱状物〔如 ...
• column pitch:    列间距; 列节距; 位间距

例句与用法

1. It is obtained by distilling soft pitch in modified pitch column under certain pressure and temperature after certain time heating
   中温沥青经过在一定的压力和温度下，经过一定时间热处理获得。