The experimentalresults proved that CdS is a better additive for lowering HTPB compositesolid propellant burning rate pressure exponent.是什么意思_The experimentalresults proved that CdS is a better additive for lowering HTPB compositesolid propellant burning rate pressure exponent.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句