实证结果表明：大约自1997年以来，一期价格行为表现出很强的随机性。

It is found that since about 1997, there is strong stochastic behaviour of the one lag price behaviour.

youdao

实证结果表明：大约自1997年以来，一期价格行为表现出很强的随机性。

It is found that since about 1997, there is strong stochastic behaviour of the one lag price behaviour.

youdao