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Addition of clay-rich subsoil to sandy soil results in heterogeneous soil with clay peds(2-mm) or finely ground(< 2 mm) ......
采用密度泛函的B3LYP和B3PW91方法在6-311++G**基组水平上全优化了D-荧光素分子的平衡构型和振动光谱。采用标度量子力学力场(SQM)......
