淡水环境

山东淡水环境的保护问题

The protecting problem of fresh water environment in Shandong Province

淡水环境中水工钢闸门的腐蚀与防护

Corrosion and protection of hydraulic steel water gate in fresh water environment

淡水环境&陆地植物的摇篮

Freshwater environment & a cradle of the terrestrial plant

碳钢在淡水环境中的腐蚀行为

Corrosion behaviors of carbon steel in fresh water

上述结果有助于解释淡水环境中噬藻体种群大小的季节性波动。

The results were useful for explaining the seasonal change in cyanophage population in freshwater .

介绍了碳钢在淡水环境中的腐蚀行为及影响因素。

This paper introduced the corrosion behaviors of the carbon steel and the influencing factors in fresh water environment .

取得了部分碳钢、不锈钢、有色金属材料在淡水环境中的自然腐蚀数据。

The natural corrosion data of some carbon steels , stainless steels and non-ferrous metals in fresh water were acqired .

此外，在含沙的淡水环境中，沙粒对碳钢的冲刷腐蚀也是一种重要的腐蚀行为。

In addition , in the environment of fresh water containing sand , eroding corrosion to carbon steel is a kind of important corrosion behavior .

那些在冰冷的淡水环境潜水的潜水员也可能在水下有过同样的经历。而在那个时刻，如果气瓶残压较低，发生漏气意外足以致命。

Those who dive in cold freshwater can experience a similar effect while underwater , and that can be life-threatening if air reserves are low .

纺车装备在咸水环境中的使用倾向于比淡水环境下采用更大的轮子和更硬的竿子，并且线要达到30磅以上。

The spinning tackle used in saltwater today tends to be larger than that used in freshwater and consists of larger reels on heavier rods and line up to30-pound test .

它是由热带暴雨期的片状流水与强风期的风搬运作用而堆积，再在淡水环境中沉淀胶结成松散的砂丘岩类。

It has been piled by transportation through laminar flow in tropic heavy rain seasons and strong wind in storm periods , and by deposition and cementation in the environment of fresh water , it was formed into loose dune rock .

孔洞充填方解石与碳酸盐围岩的氧碳同位素有别，前者的Z值小于120，是反馈淡水岩溶环境的重要标志之一。

The oxygen and carbon isotopes are different for pore space-filled calcite and carbonate rocks as wall rocks : Z values are less than 120 for the former , which may be an important indicator for fresh - water karst environments .

淡水介质环境的25号钢疲劳性能试验研究

Study on Fatigue Performance Test for 25 Steel in Fresh Water

淡水沉积物环境质量基准差异分析

The Difference and Cause Analyses of Freshwater Sediment Quality Guidelines

放养鱼类对淡水生态环境的下行影响（综述）

The top-down effect of fish stocking on the freshwater environment ( A review )

斋桑盆地自晚白垩世以来即为淡水湖泊环境，其始新世至中新世湖相及湖边缘相沉积物产有丰富的轮藻化石。

The Zaysan Basin in eastern Kazakstan has been the site of a freshwater lake since Late Cretaceous time .

固着生物固着生物体，如海藻和小型甲壳动物，固着在突出淡水水底环境的表面上。

Sessile organisms , such as algae and small crustaceans , that live attached to surfaces projecting from the bottom of a freshwater aquatic environment .

长江河口浮泥是悬沙在盐淡水混合环境中絮凝沉降于近底和风暴潮再悬浮泥沙形成的高浓度浑水层。

The fluid mud in the Changjiang River Estuary is a layer of sediment with high concentrations near the bed , resulting from flocculation due to salt and fresh water mixing .

氨氧化细菌（ammonia-OxidizingBacteria，AOB）是一类能够将氨氧化为亚硝酸盐的细菌，广泛分布于几乎所有土壤、淡水和海洋环境中。

Ammonia-oxidizing bacteria ( ammonia-oxidizing bacteria , AOB ) are a type of bacteria which can oxidize ammonia to nitrite , and they are widely distributed in almost all soil , freshwater and marine environments .

该丘经历了早期海底、海水潜流带、混合水和大气淡水成岩环境。

This sponge mound has experienced the early submarine , marine phreatic water , mixed water and meteoric freshwater environments .

烃类的母质类型显示为Ⅰ&Ⅱ型干酪根，形成于开阔水体条件下还原的淡水湖相环境。

The parent material types of these hydrocarbons are type ⅰ - ⅱ kerogen deposited in the reducing fresh water lacustrine environment .

这类海滩岩经历了海水及淡水成岩环境，其稳定同位素组成变化范围大。

The uplifted beach rocks have undergone marine and meteoric diagenetic environments , hence , have a great range of isotope compositions .

大民屯凹陷沙河街组的二苯并噻吩与菲的比值都在10以下，表明该凹陷的沙河街组整体上形成于淡水弱氧化环境；

The ratio between dibenzothiophen and phenanthrine is less than 1.0 , suggesting that the whole Shahejie Formation was formed in weak oxidation environment of fresh water .

根据阴极保护原理，论证了在长江口咸淡水交替的环境介质中，码头钢桩宜采用外加电流阴极保护。

On the basis of the principle of cathodic protection , the verification shows that an impressed current cathodic protection is suitable for steel piles in the environment and the actual pier tests indicate that the protection method is effective .

讨论了FCM在淡水微型生物和环境生物学中的应用。

The application of FCM to freshwater microbiota and environment biology of aquatic microbiota research were also discussed .

我国淡水湖泊的水环境安全及其保障对策研究

Analysis and Guaranteeing Countermeasures for Water Environment Security of Chinese Freshwater Lakes

利用淡水鱼类监测水环境汞污染的研究

Environmental Mercury Contamination Monitoring by Using Freshwater Fishes

微藻是一类能够进行光合作用的低等植物，广泛分布在海水、淡水、土壤等环境中。

Microalgae are a group of lower plants with the capacity of photosynthesis , widely distributed in marine , freshwater , soil and other environments .

巢湖地区处于长江中下游地区，是处于东部季风气候影响的淡水湖区，对环境变化尤为敏感。

Chaohu Lake is in the mid-downstream area of the Yangtze River , in eastern monsoon climate , it is particularly sensitive to the change of the environment .

分析了该流域淡水贝类与栖息环境的关系及该流域的常见种和偶见种，并探讨了该流域淡水贝类的分布区划。

The relationship of freshwater mollusk s with their environment , common species and occasional species in this river system were analyzed and the division of mollusk distribution in the investigated waters was also discussed .