1. In order to study the impact of heavy metals on Pirate subpiraticus, 50 soil samples and 150 individuals of P. subpiraticus were collected from 5 different habitats in Nanyang City, Henan Province in July 2008. The contents of heavy metals of soil and P. subpiraticus were measured using atomic absorptions pectrometry. The carapace width, female weight, egg sac weight, the volume and number of eggs were measured and counted.
为了探明重金属含量对拟水狼蛛Pirata subpiraticus生物学特性的影响，本研究于2008年7月在河南南阳地区5种不同生境下，共采集50份土壤样本和150头拟水狼蛛样本，采用原子吸收光谱法测定了5种不同生境下雌拟水狼蛛体内重金属含量，并测定了雌蛛头胸甲宽、体重、卵袋重最、卵数目和卵体积等生物学指标。
2. The result shows: the period of the atomic inversionis decreasing with the increase of the Kerr effect When the initialcoherent field is not great (n=10), the periodicity of the atomic state evolution is destroyed by Kerr effect, otherwise, when the initial coherent field is great (n=50), the atomic state evolution has periodicity approximately, also, the period is the same as atomic inversion Whether the average photon number of the initial coherent field is greator small, the probability that the atom locates initial state is increasing with the increase ofthe Kerr effect, when x/g=5, the atom always locates initial excited state nearly.
结果表明：克尔效应的增强使得原子反转演化的周期减小(gtR≈π/x2/g2+1)；在初始相干光场较弱时(n=10)，克尔介质的非线性相互作用破坏了原子态演化的周期性，但在初始相干光场较强时(n=50)，克尔效应使？犹难莼越凭哂兄芷谛？且与原子反转演化的周期相同(gtR≈π/x2g2+1)。无论初始相干光场强弱如何，随着克尔效应的增强，原子回到初态的布居几率增大，当x/g=5时，原子几乎持续地处于初始的激发态。标签 Kerr效应密度算符间的距离原子反转原子量子态的演化 Kerr medium distance between density operator atomic inversion atomic state evolution