单词	gray theory
释义	gray theory 灰色理论
随便看	longspan structures long span structures long-span structures long span suspend-dome structure longspan suspension bridge long span suspension bridge long-span suspension bridge long-span suspension bridges longspan transmissim line structures long span transmission longspan transmission line structure long span transmission line system long span transmission tower long-span transmission tower longspan tunnel long span tunnel longspan underground structure longspan under-ground structures long spark long spatula longs peak Longs Peak long spears and halberds long speculum anoscope long speech