主要有两种模型:一是主效应模型(the main effect model)，主张不论能力高低，社会支持均具有普遍的增益作用；一是缓 冲器模型(the buffering model)，主张社会支持在应激条件、压力情 境...
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并通过数学模型，对各参试因子的主效应和交互作用效应进行了分析，最后提出旱地棉花高产稳产栽培优化方案。
Main effects and interactions among the tested factors can be analyzed using the models, which will be helpful for making schemes for high-and-stable-yield dryland cotton production.
该强度模型表明介质破坏是一个过程，反映了强度突变的应变率阈值效应与侧限压力下主破裂面上矿物颗粒团局部二次破坏的力学机制。
The model indicates that the failure of rock is a process in which there is a coupling between crack development and the slipping of cracked plane. The strain…
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