1、

The signal-to-noise ratios of both the cylinder cover vibration signal and the responding cylinder pressure signal of the training samples are effectively enhanced by time statistic average method, and Kaiser differentiator improves the identification of timing of combustion.

时域统计平均有效提高了信号的信噪比,对柴油发动机气缸压力的恢复获得了很好的结果;Kaiser差分器有效提高了对燃烧始点的辨识。

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2、

The conclusions below could be obtained from the field samples and lab measures as well as statistic analysis: E. excelsus has two dormancy types, one is winterness seedling with lotiform tuft and the other is winterness buds.

通过野外观测与取样及室内测定和统计分析,得出以下结论:肥披碱草具有两种休眠形式,一为莲座丛状冬性苗,二为冬性芽。

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