短語(yǔ)詞組短語(yǔ)time translation -invariant 時(shí)間平移不變性time -invariant system 定常系統(tǒng)；時(shí)間恒定系統(tǒng)；非時(shí)變系統(tǒng)Time -invariant field 時(shí)不變場(chǎng) 返回 time-invariant