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

1.目前猎户座热盾的首选是酚充填碳挡板材料（PICA），是一种在酚树脂中的碳纤维交叉结构。

2.The experimental results of low temperature ablator (beeswax and camphor) tests in the hypersonic wind Tunnel are presented in this paper.

2.本文给出了低材料的高超声速风洞实验研究的结果。