pica

1.The leading candidate for Orion's base heat shield is a material called PICA (phenolic impregnated carbon ablator).

目前猎户座底部防热盾的首选是酚充填烧蚀挡板材料（PICA），是一酚树中的交叉结构。

2.To find out the characters per pica of a type face at a particular type size copyfitting tables are available for this purpose.

要找出某一字体某字大小下,每派卡的字符数量,可以查阅[配稿字数表].