In this approach, a part of the system noise models are intended to adaptively match the unknown true mode.

该算法自适应调整部分系统噪声模型，使之接近符合实际的系统噪声模型。

youdao

Mikoshi-nyudo's true identity is unknown, but in some areas, he is believed to be a shape-shifting weasel, fox or tanuki.

见越入道的真实身份仍是未知，但有些地区的人们相信他是由黄鼠狼，狐貍或貍变的。

youdao

youdao

Its true shareholders are unknown, and Carlos Pascual, then U.S. ambassador to Ukraine, remarked at a conference in Kiev that he feared it was connected to organized crime.

FORBES: Magazine Article

"However, the true cost of adverse incidents remains unknown because the treatment costs of remedying the harm caused to patients or clients are not routinely measured, " the office added.

BBC: Surgeon

The true size of the universe is still unknown.

ECONOMIST: In praise of astronomy, the most revolutionary of sciences