Studies of energy spectrum analysis on the absorption and distributive laws of nutrient elements in sucking roots of ginkgo biloba l.
银杏吸收根营养元素吸收及分配规律的能谱分析。
For several special classes of matrix-polynomials, we have proved that the L-values can be obtained by computing the roots of some lower order algebraic polynomials.
对这几类特殊的矩阵多项式，与之相应的L—值问题可转化为低次的代数多项式求根问题。
Effect of different stress on roots activity and nitrate reductase activity in Zea mays L.
不同逆境对玉米幼苗根系活力及硝酸还原酶活性的影响。
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