查询词典 trophic level

The synthetic nourishment index method averages the trophic index of all parameters, and then evaluates the degree of the eutrophication. The total composition analysis nourishment evaluation colligates all kinds of representative parameters, and then evaluates the degree of the eutrophication. The grey system theory method evaluates the degree of the eutrophication through a series of calculations, such as constructing situation and situation matrix, confirming object degree, and so on.

总成分分析营养度评价法是通过对各单因子的分营养度进行算术平均，将水体营养状态连续分级；综合营养状态法是综合多项富营养化代表性指标，将其表示成指数，对水体营养状态连续乡级；灰色系统理论法是通过构造局势与局势矩阵、确定目标效果测度、多目标决策、确定最优局势等一系列系统分析计算，判断水体富营养化级别。

The individual density was 4.77 inds. per gram dry soil. The results indicated that the number of soil nematode fluctuated significantly with season, the number of soil nematode in autumn is significantly more than that in summer and in spring. Shannon-Wiener index, Pielou index, Margalef index and Trophic diversity index were used in analyzing the diversity of nematode community, ranking Cc＞Pm＞Clc, while Simpson index ranking Pm＞Clc＞Cc. The value of f/b, MI index, PPI index, MMI index, MI2-5 index, SI index and EI index were used in analyzing the characteristics of the functional structure of the nematode communities, ranking Cc＞Pm＞Clc, while PPI/MI value ranking Clc＞Pm＞Cc. It showed that the Clc was disturbed significantly.

研究结果表明，土壤线虫数量存在明显的季节波动，秋季明显高于夏季和春季；土壤线虫群落多样性指数、均匀度指数、丰富度指数和营养类群指数大小依次为阔叶林、针叶林和混交林，而优势度指数却表现为：针叶林＞混交林＞阔叶林；土壤线虫群落营养类群f/b值、MI 指数、PPI 指数、MMI指数、MI2-5指数、SI指数和EI指数均表现为：阔叶林＞针叶林＞混交林，而PPI/MI指数则表现为：混交林＞针叶林＞阔叶林，表明混交林受干扰明显；土壤理化特征与线虫数量、属数、生态指数间也存在明显相关关系。

This paper reviewed the physiological responses to the toxicity of heavy metals and the accumulation of metals in copepods, in addition of trophic transfer.

综述了近20a来重金属对桡足类影响的研究进展，包括重金属对桡足类的毒性和生理效应，重金属在桡足类体内蓄积及桡足类体内重金属的食物链传递。

These are general categories, as many organisms feed on several trophic levels, for example omnivores eat both plants and animals.

也有较广的摄食范畴，许多有机体的摄食谱跨越了多个营养水平。例如：杂食动物既吃植物又吃动物。

The jus ad rem system divides into three arrangements: the first level is the land ownership, the second level is the construction land-use right,the third level is several rights enact on the the second level(such as the easement、the security interest and so on).

再进一步认定该四种学说实际区别在于对大陆法系及英美法系相关制度的借鉴程度不同。

The endogenous source includes: the level of materials safety, the level of adminicle use safety, the level of environmental hygiene management and the level of processing technology safety management.

具体分析了我国目前农产品加工业发展的特点，从质量安全管理的角度指出我国农产品加工业发展中存在的问题，对我国加工农产品质量安全管理中存在的问题进行了阐述。

ET the Framework multilayer skeleton system has designed this system structure, then carries on the demand analysis to the office automation, introduced in this foundation the database design and the programming unit process as well as the page base class, the user register the confirmation the expression level, the service logic level, the data accessing level, the general level four realizations methods.

et Framework多层构架体系设计了本系统的结构，接着对办公自动化进行需求分析，在此基础上介绍了数据库设计和程序设计的基本过程以及页面基类、用户登录验证的表示层、业务逻辑层、数据访问层、通用层四层实现方法。

We used NCAR/NCEPT anew analyze data and the method of bilinearity insert to fix on profile distribution of several physical field in the air on observation point and the stream field of 700hPa. We primary discussed the possible mechanism to influence aerosol size distribution.The atmospheric condition of 1000hPa~700hPa level had great influence on aerosol size distribution, and influence on coarse particle mainly below 850hPa level. The horizontal wind velocity of 925hPa level is a primary gene which contributed to coarse particles in the air. Vorticity profile especially below 700hPa level is a key gene to influence diffuse and convergence of local aerosol. The air vertical motion velocity greatly influenced aggregation and remove of aerosol particles. The vertical distribution of air temperature mainly influenced vertical transportation of aerosol.

利用NCAR／NCEP逐日再分析资料，通过双线性插值方法，确定观测点上大气中几个物理量的廓线分布；及700hPa的流场，初步探讨了影响大气中气溶胶粒子谱分布的可能机制： 1000hPa～700hPa的大气状况对气溶胶粒子谱分布影响显著，对粗粒子气溶胶的影响显著的主要集中在850hPa以下；925hPa的水平风速是影响大气中粗粒子气溶胶的一个主要因子；涡度廓线(尤其是700hPa左右及以下的涡度廓线)是影响局地气溶胶的扩散的一个关键因子；大气的垂直运动速度对气溶胶的聚合及移出影响较大；大气温度的垂直分布主要影响气溶胶垂直输送。

The company is mainly engaged in development, manufacturing, sales instrumentation, instrumentation control valves, wire and cable, cable tray, electrical control cabinets, instrument panel and the optical fiber and cable and other products, after years of product structure adjustment, and has formed WZ series instrumentation including thermal resistance, WR Series thermocouple, WSS series bimetallic thermometer, SWB temperature transmitter, pressure gauge, TYB pressure change delivery device, UHZ level gauge, level transmitter, speed transducer and flow transmitter, instrument control valves, temperature, pressure, flow, speed, level series fieldbus instrumentation products; wire and cable including power cables, high temperature silicon rubber cables, inverter cables, control cables, computer cables, cross-linked power cable, ACSR, fire-retardant cables, heating cables, railway signaling cable, fire cable, marine cable, wire compensation, compensation cables, cable tray series wire and cable products; communications center beam tube fiber optic cable, including fiber optic cable, twisted layer type optical cable, ribbon cable, ADSS fiber optic cable and wiring products; business for many years was rated "provincial contract Shou credit advanced enterprises "," provincial advanced enterprises to pay taxes according to law "," Bank Credit AAA Grade Enterprise "," provincial-level high-tech enterprise "," China Electronics hundred enterprises "," National Association of temperature instrumentation "," National Cable exemption Products "and other honorary titles.

公司主要从事开发、制造、销售仪器仪表、仪表管阀件、电线电缆、电缆桥架、电气控制柜、仪表盘和光纤光缆等产品，经过多年的产品结构调整，已形成仪表包括WZ系列热电阻、WR系列热电偶、WSS系列双金属温度计、SWB温度变送器、压力表、TYB压力变送器、UHZ液位计、液位变送器、速度变送器和流量变送器、仪表管阀件、温度、压力、流量、速度、液位现场总线等系列仪器仪表产品；电线电缆包括电力电缆、高温硅橡胶电缆、变频电缆、控制电缆、计算机电缆、交联电力电缆、钢芯铝绞线、阻燃电缆、伴热电缆、铁路信号电缆、防火电缆、船用电缆、补偿导线、补偿电缆、电缆桥架等系列电线电缆产品；通信光缆包括中心束管光缆、层绞式光缆、带状光缆、ADSS光缆及其配线系列产品；企业连续多年被评为"省级重合同守信用先进企业"、"省级依法纳税先进企业"、"银行资信AAA级企业"、"省级高新技术企业"、"中国电子百强企业"、"全国温度仪表协会理事"、"国家电缆免检产品"等荣誉称号。

Meanwhile, the experiments show that the multi-level swarm intelligence refinement algorithm is better than the multi-level tabu search refinement algorithm, especially in view of the probability that the approximate global minimum partition of the coarser graph may be the local minimum partition of the finer graph. Furthermore, the experiments show that the multi-level ant colony optimization refinement algorithm achieves more performance improvement than the multi-level particle swarm optimization refinement algorithm, using the gain of vertex more effectively.

实验数据反映出，针对最小图上的全局最优剖分可能是初始图的局部最优剖分、粗化图上的全局最优剖分可能是细化图的局部最优剖分的情况，基于群智能的多水平迁移优化算法相比基于禁忌搜索的多水平迁移优化算具备更强的逃离局部最优的能力；基于蚁群的多水平迁移优化算法相比基于微粒群的多水平迁移优化算法，对收益值的启发信息更为有效地利用，取得最佳的性能改进。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48