... 成对的随机抽样法 Paired (or matched) random sampling 成对差 Paired difference 成对样本 Paired samples ...
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尤为严重的是碱法制浆产生的麦草碱木素由于水溶性和表面活性差而难以在工业上得到广泛应用，从而造成对环境的严重污染。
It is difficult for alkali lignin of wheat straw produced by alkaline pulping to be widely used in industry because of its poor solubility and surface activities.
其它开关卡，例如7700型20通道差分复用模块，采用的是闭锁型继电器，无论是成对还是单独使用一个闸刀，偏移电压都是相同的。
Other CARDS, such as the Model 7700 20-channel Differential Multiplexer Module, use latching relays, and the offset voltage is the same whether the poles are used as a single pole or as a pair.
首先利用付里叶变换，使问题的求解转换成对一对变量为裂纹面上位移差的对偶积分方程的求解。
By using the Fourier transform, the problem can be solved with a pair of dual integral equations in which the unknown variable is the jump of displacements across the crack surfaces.
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