尸体痉挛死后肌肉未经松弛期立即发生强直保留了生命最后阶段的肌肉收缩状态的尸体现象
Cadaver spasm refers to the phenomenon of a corpse where muscles become rigid immediately after death without a relaxation period, retaining the muscle contraction state of the final stage of life
以上为机器翻译结果，长、整句建议使用 人工翻译 。