Durum wheat semolinas - determination of the undersize fraction 硬质小麦粗粉.筛下物的测定
2.
Bolts with drilled or undersize heads shall not be used 被钻孔或头部尺寸太小的螺栓不能使用。
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Physical features : silver grey sponge metal , delivered size of 3 - 25mm , less than 5 % undersize of 3mm 物理状态：银灰色海绵状金属。交货粒度要求3 ? 25毫米，小于3毫米的物料不超过5 % 。
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Partial wavelet coefficients ca n ' t be set zero when the threshold is undersize so parts of noises are retained and some useful signals will be taked off when the threshold is iusto major so parts of useful signals are lost . these cases result in dissatisfactory denoising 如果阈值选取过小，那么有一部分的噪声小波系数将不能被置零，从而在去噪后的信号中保留了部分噪声信息，使去噪的效果变差。
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