The decay rate of the corresponding strong solution at infinity is also given for some kinds of initial data with exponential decay.
若其初值以指数方式衰退，且空间可微，则此强解在之后的时间内也将以指数方式衰退。
The decay rate of the corresponding strong solution at infinity is also given for some kinds of initial data with exponential decay.
若其初值以指数方式衰退，且空间可微，则此强解在之后的时间内也将以指数方式衰退。
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