High-Temperature Transverse Fr acture Toughne 18l7 了 省38曾月8258 3s吕oz只 898e2:July 1997 High-Temperature Transverse Fracture Toughness M 3 0 c 6 c * P 8 z 1817 B * 0 Fs? B m * 0 4 c 0 a '3 c Q 2