利用正交试验法进行的单颗粒圆柱状型煤燃烧试验所获得结果，进一步在型煤实验台上进行了层燃实验。

With the results obtained from the combustion test with single column briquette conducted with a orthogonal test method, layer combustion test was further conducted on a briquette test bench.

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论文第四章论述了信号幅度柱状图法估算取样信号误码率的原理和方法。

In the fourth chapter of the thesis the principle of evaluating the bit rate error by synchronous and asynchronous histogram were shown.

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结果表明：只有微分干涉相衬法光学金相才清晰地显示了熔合区扩散过渡层存在白亮、光滑、无胞状柱状凝固特征的“白亮带”和具有胞状凝固特征的后续熔化滞留层。

The results show that "the bright band" and "follow-up melted stagnant layer" are clearly observed only with differential interference contrast and has bright and no cellar-columnar.

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