自然地

Cultivated land quality was assessed by BP neural network in Dazu County, Chongqing. The assessment results showed that paddy lands were mainly of the second-grade and third-grade, while dry lands were mainly of the first-grade and second-grade. It illustrated the high natural quality of the cultivated land, but the natural quality only reflected land natural characteristics. Therefore, influence coefficient was used to modify natural quality index based on the investigation to households. At the same time, by using the household income as the value of cultivated land, the impact of natural quality and investment structure on the value were further discussed. The results showed that trinomial equation and binomial equation were fitted to reflect the relationship between natural quality and income.

该文采用BP神经网络模型对重庆市大足县耕地自然质量进行评价，发现研究区水田自然质量等级以二等地和三等地为主，旱地以一等地和二等地为主，耕地自然质量总体偏高；但耕地自然质量仅仅是耕地自然属性的反映，因此在基于对研究区农户行为调查的基础上，采用"影响力系数"对耕地自然质量进行修正，并将农户收益作为耕地质量货币化价值的表现，进一步讨论了耕地自然质量和农户投资结构对这种价值的影响以反映对耕地质量的影响。

Urban Remnant Natural Area is left behind in the urban planning area along with urbanization. Its landscape assessment is significant for urban natural preservation. On the basis of URNA's characteristics and in line of the domestic actual situation, psychophysical method, one of the most scientific and credible methods, is chosen to establish the complete landscape assessment system, including acquiring scenic beauty value by SBE method, dividing into different influencing factors by SD method, and setting up their connection model by multiple linear regression analysis. This method is also revised during the application process.

城市自然遗留地是随着城市化的进程在城市规划区内遗留下来的用地，根据城市自然遗留地城市性、自然性和遗留性的特点，结合国内的实际情况，运用目前最严格、可靠性最好的心理物理学方法，以相片为测试材料，采用SBE法获得美景度量值，SD法测定各景观要素量值，以及多元线性回归方法建立2者的关系模型，最终提出了城市自然遗留地景观美学评价完整的方法体系，并修正和完善了心理物理学方法在城市自然遗留地领域的具体应用。

On the basis of URNA's characteristics, psychophysical method, one of the most scientific and credible methods, is chosen to establish the complete landscape assessment system, including acquiring scenic beauty value by SBE method, dividing into different influencing factors by SD method, and setting up their connection model by multiple linear regression analysis.

城市自然遗留地是随着城市化的进程在城市规划区内遗留下来的的用地，根据城市自然遗留地城市性、自然性和遗留性的特点，结合国内的实际情况，运用目前最严格、可靠性最好的心理物理学方法，以相片为测试材料，采用SBE法获得美景度量值，SD法测定各景观要素量值，以及多元线性回归方法建立两者的关系模型，最终提出了城市自然遗留地景观美学评价完整的方法体系，并修正和完善了心理物理学方法在城市自然遗留地领域的具体应用。

Species diversity in three types of vegetation were relatively higher in August, and lower in May. Species diversity of vegetation was highest in the reconverted grazing land, lower in the semi-fixed dune land, and lowest in the natural reconverted farmland. The stability of vegetation in the reconverted grazing land was relatively high and strong buffering function to changing environment among three types of vegetation.

放牧自然恢复地植被的物种多样性相对较高，半流动沙地相对较低，退耕自然恢复地最低，这说明相对于半流动沙地和退耕自然恢复地，放牧自然恢复地稳定性相对较高，对环境波动的缓冲功能强。

Very naturally, the author adopts misclassified examples to revise the classifier model online.

很自然地，作者就考虑采用训练集错分样本来在线修正分类器模型。

It happens naturally in a life-or-death emergency situation, when there is no time for the mind to worry over a problem.

它自然地发生于生死间的紧急状态，此时思想没时间为问题而担忧。

On the other hand, people with strong genetic predispositions may become depressed without experiencing much stress.

自然地，那些高压力、高基因易感性的人患抑郁症的可能性最大。

On the other hand, people with strong genetic predispositions may become depressed without experiencing much stress.

那些高压力，高基因易理性的人患抑郁症的能够性最大，自然地。

This thesis mainly concentrates on the the hadrons which are recently discovered by the BES Collaboration and the Babar Collaboration, mostly we use phenomenological models of hadron structure to estimate the hadron mass, to study the production properties and decay properties and so on.

进一步我们指出X(1835)在γ(1S)→γX(1835)和J／ψ→ωX(1835)中的产生率很小，因而很难被观测到，这样很自然地解释了为什么CLEO合作组在γ(1S)的辐射衰变中没有观测到X(1835)。

Empedocles did not believe that adaptation required a final cause, but "came about naturally, since such things survived".

恩培多克勒认为，适应不需要终极原因，适应&自然地发生，因为这种东西活下来了&。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。