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碎屑
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  detritus
    The value of detritus HAC per unit ash free dry weight (AFDW),as determined at the time when the detritus lost 23% of its initial weight,ranged from 16.16 to 17 41 kJ/g AFDW and increased rapidly to a maximum of 24.00 kJ/ g AFDW at 49% dry weight loss of detritus during decomposition.
    HAC的热值在初始干重损失百分率小于23% 的碎屑中波动于16.16~17.41 kJ/g AFDW (去灰分干重),在进一步分解的碎屑中迅速提高,最大值(24.05 kJ/gAFDW )出现在初始干重损失百分率为49.44% 的碎屑中。
短句来源
    The absolute and relative contents of hydrolysis available calories (HAC),tannin free HAC (TFHAC) and chemical available calories (CAC) of the detritus during the seasonal decomposition of mangrove (Kandelia candel (L.) Druce) leaf litter in Fujian,China was determined.
    测定了福建红树植物秋茄(Kandelia candel (L.) Druce)各季节落叶分解碎屑中水解有效能(HAC)、无丹宁水解有效能(TFHAC)和化学有效能(CAC)的绝对含量和相对含量。
短句来源
    By analyzing its fore-gut content,the proportions of amorphous detritus,fungi and diatoms were 60.40%,3.91%,35.96%. Therefore,the contribution rates of the above types of food to secondary production were 32.2%,10.4%,57.4%.
    在其前肠内含物中,无形态碎屑、真菌和硅藻所占比例分别为60.40%、3.91%和35.96%,对生产量的贡献率分别为:32.2%、10.4%和57.4%。
短句来源
    DETRITUS FORMATION FROM A SUBMERSED MACROPHYTE, NAJAS MAJOR ALLIONI
    大茨藻的碎屑形成过程
短句来源
    THE PROCESS OF DETRITUS FORMATION IN FOUR PLANKTERS
    四种浮游生物的碎屑形成过程
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  “碎屑”译为未确定词的双语例句
    and that of Pagastia sp. was 8. 5132 g/( m2·a) and 8. 4, respectively.
    帕摇蚊,8.5132g/(m2·a),P/B为8.4.除粗腹摇蚊外,其它四种摇蚊的前肠内含物中无形态碎屑所占比例均高于90%,对生产量的贡献率达到77%-96%;
短句来源
    Recognition of Gypseous Broken-fossils in the White Clay near Permian/Triassic Boundary of the Meishan Section in South China
    中国煤山剖面事件界线层粘土中石膏化生物化石碎屑初探
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    Phytoplankton abundance and Chla concentration is low in the YSBCW ,where the volume of phytoplankton cells is only 8.18% of the volume of totalparticles. The feeding effect on the phyt oplankton biomass is not significant forCV and adult female C.
    代表冷水团内部的 1-7 站 60 米的水层中浮游植物和叶绿素的含量很低,浮游植物细胞在总颗粒物中占有的体积比例只有 8.18% ,有机碎屑可能是颗粒物的主要组成部分。
短句来源
    After cultered 96 hours, we can found many sporocysts and filter-paper slices in the fermentable liquid.
    培养96小时后,滤纸纤维素被降解成碎屑,液体培养基中有大量孢囊存在;
短句来源
    The strata deposited continuously between the Carboniferous and Permian in southern Guizhou and northwestern Guangxi may be divided into three sedimentary facies: Huagong, Pingchuan and Changmo facies.
    本文将黔南、桂西北上石炭统Pseudoschwagerina带与下二叠统Misellina claudiae带间连续沉积的百米至千米厚的地层划分为花贡碎屑岩相,平川灰岩-泥灰岩相及常么纯灰岩相。
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  detritus
Representatives of gamasid (three species) and uropodid (two species) mites abundant in storm detritus were used as model species.
      
Unbalanced composition of higher trophic levels results in an unstable functioning of the lake and accumulation of significant amounts of detritus, which is utilized by the abundant microzoobenthic component of the ecosystem.
      
As against zooplankton, the biomass of zoobenthos features much less contingencies with the biomass of microalgae as well as zooplankton, since detritus, higher plant tissues, and small animals are the basis of the diet of benthic organisms.
      
Specific structural features of giant fishbone detritus accumulations, which represent organic phosphate deposits with uranium and rare earth elements, are scrutinized.
      
The obtained results have made it possible to reconstruct paleotectonic and paleogeographic conditions of the formation of orebodies, as well as the mechanism for the accumulation of metalliferous bone detritus.
      
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Calanus pacificus, Brodsky Paracalanus parvus, (Claus)P. aculeatus Gies brecht, Acrocalanus sp, and Temora turbinata (Dana) are herbivora, but few individuals of Calanus can capture smaller copepods. As a rule, the food of these species consists largely of phytoplankton common in the sea at the time of feeding, indicating the absence of selective feeding. Centropages tenuiremis Thompson et Scott and Acartia pacifica Steuer are omnivora which prefer however plant food. Labidocera euchaeta Giesbrecht is also an...

Calanus pacificus, Brodsky Paracalanus parvus, (Claus)P. aculeatus Gies brecht, Acrocalanus sp, and Temora turbinata (Dana) are herbivora, but few individuals of Calanus can capture smaller copepods. As a rule, the food of these species consists largely of phytoplankton common in the sea at the time of feeding, indicating the absence of selective feeding. Centropages tenuiremis Thompson et Scott and Acartia pacifica Steuer are omnivora which prefer however plant food. Labidocera euchaeta Giesbrecht is also an omnivore, but it prefers animal diet. Furthermore, the food composition of Labidocera appearsto vary with season. Euchaeta concinna Dana and Tortanus derjuginii Smirnovare carnivorous copepods. In the former species no food was found in the guts of male. The length of faecal pellets increases with the size of copepods, but varies with the composition of food in different species with different feeding habits. The length of faecal pellets is much longer in herbivora than in both omnivora and carnivora.A close relationship exists between the feeding habits and the structure of mouth-parts in these copepods. In herbivora, the teeth of masticatory edge of mandible are molar-like, and armed with siliceous corona to grind down the hard frustule of diatoms. The plumous setae of maxilla are formed as filtering net. The other appendages of mouth-part are also well developed and their correlated action produces "feeding swirls". In carnivora, the masticatory teeth without siliceous corona are fewer in number, but very sharp and stout, The long spinous setae of well-developed maxilla or maxillipeds are used to capture animal preys. In omnivora, the structure of these appendages has a characteristic in common with both herbivora and carnivora. In Acartia and Centropages, the parts of teeth in mandible have siliceous corona, but the masticatory teeth are sharper than those of herbivora. The distal parts (endo-podite) of maxilla are modified as prehensile organs. The appendages of mouth-part of Labidocera are similar to those of carnivorous Tortanus, but have rather numerous setae at the basipodite of maxilla used for filtering plant food.

厦门10种常见浮游桡足类的食性可分为下列三类: 1.素食性:包括太平洋哲镖水蚤,小型拟哲镖水蚤,针刺拟哲镖水蚤,敏哲镖水蚤和尖宽镖水蚤.它们的饵料成分基本上反映了海区中浮游植物的种类组成情况,对饵料的选择性不大.素食者的口部附肢具有发达的刚毛,其摆动产生了捕食涡流。第二小颚伸向前方,共羽状刚毛形成密微的过渡纲,大颚咀嚼缘齿较多。呈臼齿状,具发达的硅质齿冠,用以磨碎硅藻的外壳. 2.肉食性:包括精致真刺镖水蚤和特氏歪镖水蚤.主要捕食小型桡足类.但饵料成份有显著两性差异.肉食者口部附肢的刚毛较少.第二小颚或颚足强壮,具长刺,是强有力的捕食器官,大颚缘齿少,尖锐,呈犬齿状,且无齿冠.但雄性真刺镖水蚤几不捕食,口部附肢退化. 3. 杂食性:这类动物又可分为二群:(1)以素食性为主的有瘦尾刺镖水蚤和太平洋纺锤镖水蚤.它们也以硅藻为主要饵料,但含较多的碎屑.共口部附肢兼备素、肉食性的特点.如大颚齿部分有齿冠.但较尖锐.第二小颚基肢是过滤器.内肢刚毛稍呈爪状,以适捕食.(2)以肉食性为主的真刺髻角镖水蛋的饵料成分有季节变化.它的口部附肢和歪镖水蚤较为相似,但第二小颚基肢是过滤器. 桡足类粪块长度随饵料成分而不同...

厦门10种常见浮游桡足类的食性可分为下列三类: 1.素食性:包括太平洋哲镖水蚤,小型拟哲镖水蚤,针刺拟哲镖水蚤,敏哲镖水蚤和尖宽镖水蚤.它们的饵料成分基本上反映了海区中浮游植物的种类组成情况,对饵料的选择性不大.素食者的口部附肢具有发达的刚毛,其摆动产生了捕食涡流。第二小颚伸向前方,共羽状刚毛形成密微的过渡纲,大颚咀嚼缘齿较多。呈臼齿状,具发达的硅质齿冠,用以磨碎硅藻的外壳. 2.肉食性:包括精致真刺镖水蚤和特氏歪镖水蚤.主要捕食小型桡足类.但饵料成份有显著两性差异.肉食者口部附肢的刚毛较少.第二小颚或颚足强壮,具长刺,是强有力的捕食器官,大颚缘齿少,尖锐,呈犬齿状,且无齿冠.但雄性真刺镖水蚤几不捕食,口部附肢退化. 3. 杂食性:这类动物又可分为二群:(1)以素食性为主的有瘦尾刺镖水蚤和太平洋纺锤镖水蚤.它们也以硅藻为主要饵料,但含较多的碎屑.共口部附肢兼备素、肉食性的特点.如大颚齿部分有齿冠.但较尖锐.第二小颚基肢是过滤器.内肢刚毛稍呈爪状,以适捕食.(2)以肉食性为主的真刺髻角镖水蛋的饵料成分有季节变化.它的口部附肢和歪镖水蚤较为相似,但第二小颚基肢是过滤器. 桡足类粪块长度随饵料成分而不同,素食者的粪块最长,杂食者次之,肉食者最短.饵料不同,粪块颜色也有差异。

More than forty species assigned to 26 genera of spores and pollen grains arediscovered from the Mesozoic volcanic clastic sedimentary rocks in Zhejiang.Sixteenspecies are here described,including 11 new species as listed below:Cicatricosispori-tes Zhejiangensis sp.nov.,Cicatricosisporites pinguis sp.nov.,Lygodium crassus sp.nov.,?Trilobosporites applanatus sp.nov.,Agathis? mirus sp.nov.,Agathis fortis sp.nov.,Ephedra grandis sp.nov.,Welwitschiapites gracilis sp,nov.,Cedrus minutus sp.nov.,Piceites simplex sp.nov.,and...

More than forty species assigned to 26 genera of spores and pollen grains arediscovered from the Mesozoic volcanic clastic sedimentary rocks in Zhejiang.Sixteenspecies are here described,including 11 new species as listed below:Cicatricosispori-tes Zhejiangensis sp.nov.,Cicatricosisporites pinguis sp.nov.,Lygodium crassus sp.nov.,?Trilobosporites applanatus sp.nov.,Agathis? mirus sp.nov.,Agathis fortis sp.nov.,Ephedra grandis sp.nov.,Welwitschiapites gracilis sp,nov.,Cedrus minutus sp.nov.,Piceites simplex sp.nov.,and Podocarpus gracilis sp.nov.,The presentspores and pollen grains occur mainly in the lower part of the Shouchang formationin Jiande of Western Zhejiang and the Guantou formation in Xinchang ofeastern Zhejiang,which may be referred respectively to the late Upper Jurassicand the early-middle Lower Cretaceous.Discussion is also made on the cla-ssification and nomenclature of gymnospermous pollen grains with equatorial zoni-colpate and distal pore,which were designated by some palynologists as the genus ofclassopallis.But from the palaeobotanical viewpoints,these pollen grains belongprobably to different genera of a single family.According to variant exine ornamen-tations on the equator,it seems that the different genera of these pollen grains maybe readily distinguished as in Pagiophyllumpollenites,Monilapollis,etc.Actual exa-mples are here given to substantiate the classification useful for the stratigraphicdivision and correlation.

本文是对浙江中生界火山碎屑沉积岩地层中的孢子花粉的分析研究(共发现孢粉26属40多种),同时对浙西建德县和浙东新昌县含孢粉层位的时代提出了初步意见,此外,系统描述了主要孢粉类型9属16种,其中11新种。

The present paper deals with the comparative anatomy of the digestive system and the gas-bladders of clupeoid fishes. Nine species belonging to nine genera and five subfamilies have been investigated in this study.The clupeoid fishes mainly feed on plankton, diatoms and debris. Their mouth is small, with small or degenerated teeth. A principal adaptation of the strainers is the development of the gill rakers. In Harengula nympha, Sardinella aurita, Macrum reevesii and Clupanodon punctatus have suprapharyngeal...

The present paper deals with the comparative anatomy of the digestive system and the gas-bladders of clupeoid fishes. Nine species belonging to nine genera and five subfamilies have been investigated in this study.The clupeoid fishes mainly feed on plankton, diatoms and debris. Their mouth is small, with small or degenerated teeth. A principal adaptation of the strainers is the development of the gill rakers. In Harengula nympha, Sardinella aurita, Macrum reevesii and Clupanodon punctatus have suprapharyngeal organs. The stomachs show a rather Y- and or U-shaped pattern. Clupanodon punctatus and Macrura reeveii have a U-shaped pattern and the wall of the pylorus is more or less thickened and mascularized; the stomach of the former species a appears as a bird's gizzard; the latter species has a Y-shaped pattern. Those fishes which feed principally on phytoplanktons have an elongated intestine arranged in folds. All clupeoid fishes have a pyloric caeca. The gas-bladders extend anterioly to the region of inner ears and some of them have posterior openings. The gas-bladders show three patterns and two subpatterns.

本文对鲱科5亚科、9属9种鱼类的消化系统和鳔作了比较研究。鲱科鱼类主食浮游生物、硅藻和有机碎屑。口小。齿小或退化。鳃耙发达,细长数多,具滤食作用。有些种类具咽上器官。胃呈Y型和U型。斑(鱼祭)的幽门胃壁肌肉屡增厚,它们主食浮游植物,肠长而盘曲多。所有鲱科鱼类均具幽门盲囊,鳔分支向前经耳囟延伸至内耳区,有些有后鳔管孔通外界。鳔有3式型和2亚型。

 
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