Simulation results indicate that rotor position and speed could be precisely estimated by using this method. Dynamic and steady state performances are good.
仿真结果表明，这种方法能够准确估计出电机的转子位置和转速信息，动静态性能良好，并基于此实现了最大功率追踪控制。
Precisely estimated time delay of acoustic wave signal is very important to implementing the most accurately measurement of temperature using acoustical method in the strong noise environment.
声波信号时延的准确估计是实现强噪声环境下声学法高精度测温的关键。
The era when the first clusters formed is not precisely known, but is estimated to be at least 9 billion years ago and possibly as far back as 12 billion years ago.
第一个星系集群形成的时代现在已经不能准确知道了，但是据估计至少是在9亿年前形成的，或许更早一些，在120亿年前就已经形成了。
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