NaCl胁迫对两品种生菜生理特性的影响

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Abstract 给出了在比较弱的条件下非线性中立型差分方程振动的几个充分条件.即若记(H1):|f(x)|≥c|xa|,(c>0);(H2):∑∞n=rqn=+∞,下面4个条件之一成立:①pn=1,且(H1)和(H2)成立;②pn=1,(H1)成立,且对(H1)中的α,∑∞n=rnαqn(∑∞n=rqi)α=∞成立;③0

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https://journal.zhku.edu.cn/EN/ OR https://journal.zhku.edu.cn/EN/Y2008/V21/I2/14

[1]	. [J]. Journal , 2015, 28(2): 49-52.