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碎屑
相关语句
  detritus
    The ratio of dissolved organic matter and particle organic matter is 1:1.7, ana detritus constitues about 4/5 of the particle organic matter.
    溶解有机物与悬浮有机物比值约为1:1.7,有机碎屑约占有机悬浮物的4/5。
短句来源
    Laboratory observation indicated that the whole process of detritus formation from Pleurosigma formosum took about: 19-21 days at the temperature of 30℃ or 13-15 days at the temperature of 37℃.
    (5)碎屑完全形成期。 降解过程19~21d(30℃)或13~15d(37℃)。
短句来源
    The sizes of the particulate organic detritus vary greatly, from 5.3 μm to 95.0 μm in length, with the average 46.08±27.52 μm.
    有机碎屑颗粒大小悬殊,其长径5.3~95.0μm,平均46.08±27.52μm。
短句来源
    THE PROCESS OF DETRITUS FORMATION FROM PL EURO SIGMA FORMOSUM W. SMITH
    美丽斜纹藻的碎屑形成过程
短句来源
    Biological composition and FAA content of particulate organic detritus from mudflat of intertidal zone
    潮间带滩涂颗粒有机碎屑生物组成及其游离氨基酸分析
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  “碎屑”译为未确定词的双语例句
    Secondly, it can feed on humus of organism, whose occurrence rate was 100% and weight percent was 10.0%;
    其次是有机碎屑,出现频率达100%,重量百分比为10.0%;
短句来源
    PHYTOPLANKTON AND ORGANIC-DETRITUS IN HIGH-OUTPUT FISH PONDS WITH BLACK CARP AS THE MAJOR CULTURED SPECIES
    主养青鱼高产池塘的浮游植物和有机碎屑
短句来源
    Young mackerel of the year also ate seaweeds and other kinds of plant seeds, sand and mud.
    并吞食海藻碎片、植物碎屑、种子、砂泥等,有杂食性的表现。
短句来源
    Nauplius of the brine shrimp (Artemia salina) has been used extensively as a live food for rearing larvae of marine fishes and prawns.
    本文利用我国北方塘沽盐场产的卤虫(Artemia salina)休眠卵作为孵化培养的试验材料,对卤虫的形态进行解剖观察并作详细叙述。 卤虫以单细胞藻及有机碎屑为饵。
短句来源
    The Mullet fry below 40 mm in fork length feed on plankton, mainly on Copepoda and Oligochaeta larvae.
    当年生棱鲻主要摄食桡足类(包括幼体),寡毛类幼体,硅藻类,有机碎屑和泥沙,叉长在 40 mm以下的幼鱼,主要摄食浮游幼物,以桡足类和寡毛类幼体为主。
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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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The White Crucian Carp (Carassius cnvieri T. et S.) is one of the omnivorous fishes, its fingerling feeds mainly on organic detritus and planktons, which include some filamentous algae such as Spiroyyra.A series of tracer experiments using P32 as a tagger and the radioautography had been carried out. The result presented here indicates that Spiroyyra can be ingested, digested and absorbed by the fingerliug of White Crucian Carp. Under conditions of our xperiment, the average feeding capacity of the fingerling...

The White Crucian Carp (Carassius cnvieri T. et S.) is one of the omnivorous fishes, its fingerling feeds mainly on organic detritus and planktons, which include some filamentous algae such as Spiroyyra.A series of tracer experiments using P32 as a tagger and the radioautography had been carried out. The result presented here indicates that Spiroyyra can be ingested, digested and absorbed by the fingerliug of White Crucian Carp. Under conditions of our xperiment, the average feeding capacity of the fingerling of White Crucian Carp fed on Spirogyra is 1.85-4.00% (percentage of food consumed daily to body weight), and its digestive rate is 48.49%.

白鲫是杂食性鱼类,其鱼种主要食物是有机物碎屑和浮游生物,其中包括一定数量的丝状藻类,如水绵等。应用P32放射性同位素进行示踪试验和鱼体放射自显影,证实白鲫鱼种可以摄食和消化利用水绵。在我们的试验条件下,白鲫取食水绵的摄食率(日摄食量占鱼体重量的百分比)为1.85-4.00%,对水绵的实际消化吸收率为48.49%。

1. The food organisms of young mackerel of the year were diverse in species and they included polychaeta, Chaetognatha (Sagitta crassa), Copepoda, Amphipoda (young Themisto gracilipes), Caprellidea, Cephalopoda (Idiosepius paradoxa), fishes (young anchovy, Engraulis japonicus, young mugil, etc.), but fishes, cephalopods and crustaceans were the major varieties. Young mackerel of the year also ate seaweeds and other kinds of plant seeds, sand and mud. 2. In the Yantai-Weihai coastal region, young mackerel of...

1. The food organisms of young mackerel of the year were diverse in species and they included polychaeta, Chaetognatha (Sagitta crassa), Copepoda, Amphipoda (young Themisto gracilipes), Caprellidea, Cephalopoda (Idiosepius paradoxa), fishes (young anchovy, Engraulis japonicus, young mugil, etc.), but fishes, cephalopods and crustaceans were the major varieties. Young mackerel of the year also ate seaweeds and other kinds of plant seeds, sand and mud. 2. In the Yantai-Weihai coastal region, young mackerel of the year, less than 89 mm FL in size, fed mainly on planktonic organisms. When they reached to the size larger than 80 mm, they could take various specieses of food organisms, showing their omnivorous feeding habits. There was a little change in food items taken by mackerel from year to year. In the Qingdao coastal region young mackerel of the year fed mainly on Idiosepius paradoxa, juveniles of Themisto gracilipes and juveniles of fish, but some groups fed among the dense clusters of seaweeds, consequently, in their stomach Caprellidea, seahorse, thread of hemp, etc. could be found. 3. As the FL of young mackerel of the year become longer, a slight change in their preference of food items could be observed, though it was not conspicuous. This was due to the feeding habits of the young fish of 35 mm FL was nearly similar to that of the adult and in the shallow coastal waters planktonic organisms were scarce but young anchovies (Engraulis japonicus) and mugils and Idiosepius paradoxa, etc. were in abundance. 4. Young mackerel of the year fed day and night. At night they followed the tide and came into the shallow coastal waters where they snatched juveniles of anchovy and Themisto gracilipes throughout the whole night and daring the daytime they fed on planktonic organisms, benthos, young fishes, seaweeds and other kinds of plant, seeds, etc.. 5. Since the adult mackerel fed mainly on adults of anchovy (Engraulis japonicus) and Themisto gracilipes, young mackerel of the year fed mainly on the juveniles of anchovy and Themisto gracilipes. There was a close relation in nutrition between mackerel and anchovy ane Themisto gracilipes. Adult mackerel lived in the coastal waters deeper than 20 meters, where they searched their food organisms, while young mackerel of the year lived in the coastal waters shallow than 20 meters, where they might grew up and took these areas as their nursery grounds.

1.当年生鲐鱼幼鱼摄食种类十分广泛,包括多毛类、毛颚类的强壮箭虫、桡足类、端足类的细长脚(虫戎)幼体、钩虾、麦杆虫,头足类的微鳍乌贼,鱼类的鳀鱼幼鱼、梭鱼幼鱼等,其中以鱼类、头足类、甲壳类为主;并吞食海藻碎片、植物碎屑、种子、砂泥等,有杂食性的表现。 2.烟威沿岸海区叉长35—194毫米当年生鲐鱼幼鱼以微鳍乌贼、细长脚(虫戎)幼体、鯷鱼幼体等为主要食物。叉长80毫米以下个体主要以浮游生物为食,80毫米以上个体摄食种类广泛,有杂食性表现。频年摄食种类变化不大。青岛沿岸当年生鲐鱼幼鱼也以微鳍乌贼、细长脚(虫戎)幼体、鱼类幼鱼等为主要食物,但有部分群体在海藻丛中摄食,所以在胃中出现麦杆虫、海马、麻绳丝等。 3.随着体长增长有食物转化现象,但不很显著。原因:一为当年生鲐鱼幼鱼叉长35毫米即近似成鱼的摄食习性,一为沿岸浅水浮游生物较贫乏,鲐鱼、梭鱼等幼鱼和微鳍乌贼等较多。 4.当年生鲐鱼幼鱼昼夜均进行摄食,夜间各个时间随着潮流游到沿岸浅水攫食鯷鱼幼鱼和细长脚(虫戎)幼体。白天摄食浮游生物、底栖生物、鱼类幼鱼以及海藻碎片、植物碎屑、种子等。 5.鲐鱼的成鱼以鯷鱼和细长脚(虫戎)为主要食物,当年生鲐...

1.当年生鲐鱼幼鱼摄食种类十分广泛,包括多毛类、毛颚类的强壮箭虫、桡足类、端足类的细长脚(虫戎)幼体、钩虾、麦杆虫,头足类的微鳍乌贼,鱼类的鳀鱼幼鱼、梭鱼幼鱼等,其中以鱼类、头足类、甲壳类为主;并吞食海藻碎片、植物碎屑、种子、砂泥等,有杂食性的表现。 2.烟威沿岸海区叉长35—194毫米当年生鲐鱼幼鱼以微鳍乌贼、细长脚(虫戎)幼体、鯷鱼幼体等为主要食物。叉长80毫米以下个体主要以浮游生物为食,80毫米以上个体摄食种类广泛,有杂食性表现。频年摄食种类变化不大。青岛沿岸当年生鲐鱼幼鱼也以微鳍乌贼、细长脚(虫戎)幼体、鱼类幼鱼等为主要食物,但有部分群体在海藻丛中摄食,所以在胃中出现麦杆虫、海马、麻绳丝等。 3.随着体长增长有食物转化现象,但不很显著。原因:一为当年生鲐鱼幼鱼叉长35毫米即近似成鱼的摄食习性,一为沿岸浅水浮游生物较贫乏,鲐鱼、梭鱼等幼鱼和微鳍乌贼等较多。 4.当年生鲐鱼幼鱼昼夜均进行摄食,夜间各个时间随着潮流游到沿岸浅水攫食鯷鱼幼鱼和细长脚(虫戎)幼体。白天摄食浮游生物、底栖生物、鱼类幼鱼以及海藻碎片、植物碎屑、种子等。 5.鲐鱼的成鱼以鯷鱼和细长脚(虫戎)为主要食物,当年生鲐鱼幼鱼也以鯷鱼幼鱼和细长脚(虫戎)幼体为主要食物。因此,鲐鱼成、幼鱼对鯷鱼、细长脚(虫戎)的营养关系十分密切。鲐鱼分布在水深20米以外的近海索饵,当年生鲐鱼幼鱼分布在沿岸育肥,这样,促使鲐鱼成、幼鱼各自充分利用分布范围内所能得到的食物,调节成、幼鱼的需要和加速当年生鲐鱼幼鱼的生长。

Nauplius of the brine shrimp (Artemia salina) has been used extensively as a live food for rearing larvae of marine fishes and prawns. The brine shrimp can be fed on a variety of live unicellular algae. 1. A morphological anatomy of the brine shrimp was described in detail. 2. The reproduction, growth and individual development of the brine shrimp were detailed. 3. Hatching conditions of the resting eggs of the brine shrimp were discussed.

本文利用我国北方塘沽盐场产的卤虫(Artemia salina)休眠卵作为孵化培养的试验材料,对卤虫的形态进行解剖观察并作详细叙述。卤虫以单细胞藻及有机碎屑为饵。一生中经过无节幼虫期、后无节幼虫期、拟成虫期和成虫期的变态过程。在这一过程中要经过多次蜕皮,每蜕皮一次,身体就长大一次。雌雄虫的形态区别主要在于第二触角和生殖器官。雄虫一般极为少见。雌虫产两种类型卵子:休眠卵和非休眠卵。后者为孤雌生殖。卤虫的生长和性成熟与其水温等有关系。水温高,生长成熟都比较快。水温还和休眠卵的孵化速度有关。平均水温20.8℃时,经46小时开始孵化;25℃经24小时开始孵化;29.5℃经12小时开始孵化。孵化水的波美氏度(卤度)以4—5度最为合适。在缺乏光照时,孵化率大为下降。卤虫无节幼虫是世界海产鱼、虾幼体的著名活饵料。因此,对其孵化、培养条件的进一步探讨是很有必要的。

 
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