河段

BaitOne of the best baits for small mouth bass in rivers is the hellgrammite, the larva of the Dobson fly.

低音坑那里的水深过滴，等待龙虾、鲰可水洗、蟹的最佳饵out.baitone小口河段是hellgrammite低音、苍蝇幼虫的布森。

This system can perform the hydrograph simulation and experience modification like a forecasting specialist with high reliability.

可靠性高的特戌，已用于长江三峡河段水文预报。采用自然语言对话操作的水文模拟专家系统也可以移置于其它模型中。

Based on the eco- environment function, confirmed the constitution of eco- environment water demand(including the inside of the watercourse.and the ecological water demand of the outside of the watercourse such as ecological water demand of economical crop, of lake or reservoir and of cities.).③Analyzing the physical geography, hydrography, economy characteristic and water resource status, getting the proper calculation method. The Tennant applied to the eco- environment water demand of inside of the watercourse, woodland minmum eco- environment water demand calculation method applied to the eco- environment water demand of woodland, water ration method applied to farmland the eco- environment water demand, water evaporation method applied to the reservoir eco- environment water demand.

本文以流域生态环境需水为主要研究对象，因此重点阐述了流域生态环境需水量的分类和计算方法；②通过分析流域生态系统构成与流域生态环境功能，并分时段和河段考虑，确定了桃花江流域生态环境需水量的组成，即包括维持现状河道生态环境功能现状的现状生态环境需水量与流域生态环境改善的生态环境需水量，前者包括河道内生态环境需水量(维持河道基本生态功能需水量、维持河道自净稀释功能需水量、补充地下水水量及美化流域景观娱乐需水)与河道外生态环境需水量(流域内植被、森林、农田的需水量和与河道相连的池塘、水库等的需水量)；后者还包括为治理改善流域生态环境而拟规划林业生态建设所需水量；③对桃花江流域的自然地理、水文地质和社会经济特征以及水资源现状及其主要生态环境问题进行了综合分析，提出了适合桃花江流域的生态环境需水量计算方法，即采用Tennant法计算河道内生态环境需水量，采用林地最小生态环境需水量法计算林地生态环境需水量，采用需水定额法计算农田生态环境需水量，采用水面蒸发法计算水库、池塘生态环境需水量。

The ecosystem health of reach from Longyangxia to Liujiaxia had been evaluated by fish IBI,diversity index of plankton,water quantity and water quality.

利用鱼类IBI指数，浮游生物多样性指数、水量、水质等指标，对龙羊峡-刘家峡河段生态系统健康进行评价。

The variety of the water level during the period the ice jam is one of the phenomena that forming mostly in the ice jam segment.

冰塞期间水位的变化是冰塞河段最主要的现象之一。

Basing on the ice jam flood of Heilongjiang River and disaster in history records,the ice jam flood situ- ation,hydrological and river way characteristic are proposed in this paper,the cause of ice jam flood and develop- ment of forecasting are analyzed,the ice jam flood disaster and protect methods are introduced.

根据历年冰坝凌汛及灾害调查资料和观测成果，综述了黑龙江上游历年冰坝凌汛发生情况，冰坝河段水文气象特征和河道特性，分析了冰坝成因研究和预报方法的进展，并阐述了冰坝凌汛灾害和防治措施。

Together with literature records, a total of 75 species or subspecies in 59 genera, 20 families and seven orders are now known from the Yinggeling area, representing 70.8% of the known fresh-water ichthyofauna and 80.0% of the known endemic fish species of the island.

利用多样性指数，得出鹦哥岭鱼类物种多样性最高的是南渡江流域的南开河和昌化江流域万冲河段的支流。

In that time, because of the outdated technique and inorganization, the coal caves have the characteristic of randomicity, concealment, universality, no obviously regularity and the small scale for single cave.

紫坪铺水利枢纽工程位于四川省成都市西北60km的岷江上游沙金坝河段，是一座以农业灌溉、城市供水为主，兼有防洪、环境保护、旅游等综合效益的水利工程。

People can know diversified conditions of the water quality, water quantity and degree of pollution in different sections of the rivers more meticulous, vivid and intuitionist when 3D visual environment simulation is applied to the simulation of water environment.

把三维视景技术应用于水环境仿真中，能使人更加细致、逼真、直观的了解不同河段的水质、水量、污染程度等各种情况。

Since 1960s, there has been a general trend of recovery in terms of water quality and invertebrate community.

摘 要：采用长系列数据，分析了影响泰晤士河潮汐河段生态状况的主要因素。1915～2006年的监测数据表明其生态状况经历了污染、恢复和稳定3个阶段，20世纪40～60年代是污染最重的时期，伴随着较高的水温、氨氮和生化需氧量以及较低的溶解氧含量，该时期少有底栖无脊椎动物的记录。

Objective To investigate the effects of interleukin-1 β converting enzyme gene on the biologic characteristics of ovarian cancer cells.

目的 探讨白细胞介素-1 β转换酶的表达，对卵巢癌细胞生物学特性的影响。

Campylobacter: This illness is the most commonly identified cause of diarrheal illness in the world.

弯曲：这种病是最常见的原因查明腹泻病，在世界上。