种
- 与 种 相关的网络例句 [注:此内容来源于网络,仅供参考]
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The mollusc species number peaked in summer (21 species), followed by autumn (10 species), spring (8 species) and winter (2 species).
四季共出现软体动物24种,其中春季8种,夏季21种,秋季10种,冬季2种。
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A clone from each genotype was randomly selected as representative for sequencing. The obtained 16S rDNA gene sequences had a similarity of 87%-100% with those in the GenBank (www. ncbi. nlm. nih. gov), and more than half of them had a similarity lower than 97%, being of new species. Based on phylogenetic analysis, the bacteria in the two soils were classified into 10 groups, with 5 groups in common. The dominant bacterial groups in the two soils differed obviously. In primeval forest soil, the dominant group was Proteobacteria, which had 39 genotypes, occupying 58.0% of all the clones; while in the soil of degraded ecosystem the dominant groups were Acidobacteria and Proteobacteria, which had 19 and 15 genotypes occupying 32.5% and 30.5% of all the clones, respectively. In the soil of degraded ecosystem, Proteobacteria group decreased while Acidobacteria group increased markedly, compared with those in primeval forest soil.
从每种基因型中随机选择一个克隆子作为代表进行测序分析,所有序列与GenBank数据库中序列的同源性为87%~100%,且两样地中均有超过一半的基因型序列与数据库中已知序列同源性低于97%,属于分类在"种"地位上的新发现细菌;通过系统发育研究将两样地的细菌分为10大类群,两样地共同拥有5大类群,但两样地的细菌优势类群明显不同,原生土壤为Proteobacteria,含39种基因型,占总克隆子数的58.0%,退化生态系统土壤为Acidobacteria和Proteobacteria,分别含19种和15种基因型,占总克隆子数的32.5%和30.5%;与原生土壤细菌类群相比,退化生态系统土壤Proteobacteria类群明显减少,Acidobacteria类群明显增加。
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The feeding and excretion of three little fishes (Hemiculter. leucisculus, Tilapia. aurea and Cirrhinus. molitorelld) was studied and their effect on water quality of Qiankeng reservoir in Shenzhen City Around the topdown effect of fish was also studied. Based on the analysis of their stomach contents, their diet composition was assayed. The three fishes" feeding rhythm in cage and their rate of digestion indoor were looked into, and their daily ration was estimated through the method of daily average fullness index. Using the spectrophotometer, the content of chlorophyll a in the stomach was measured, and the feasibility of taking the chlorophyll a as an index of measuring the feeding of fish on phytoplankton was studied. Adopting the national standard method, the effect of the three fishes" excretion on total nitrogen, total phosphorus, CODMn, pH, turbidity and conductivity coefficient was surveyed. The effect of feeding and excretion offish on water quality was discussed and the results revealed as follows:H.
围绕鱼类的下行效应,本文以深圳茜坑水库三种小型鱼类Hemiculter leucisculus罗非鱼Tilapia.aurea和鲮鱼Cirrhmus.molitorella为研究对象,以胃含物分析为基础,分析了三种鱼类的食物组成;调查了网箱中自然状态下三种鱼的摄食节律,在室内调查了三种鱼的食物消化速率,运用日平均饱满指数法计算出三种鱼的日粮;采用分光光度法测定了鱼体肠叶绿素含量,探讨了叶绿素作为鱼类对浮游植物摄食量衡量指标的可行性;采用国家标准的水质测量方法,测定了鱼类排泄对总氮、总磷、高锰酸盐指数、pH、浊度和电导率的影响量。
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I have seen at one time lying on the ice pickerel of at least three different kinds: a long and shallow one, steel-colored, most like those caught in the river; a bright golden kind, with greenish reflections and remarkably deep, which is the most common here; and another,golden-colored, and shaped like the last, but peppered on the sides with small dark brown or black spots, intermixed with a few faint blood-red ones, very much like a trout.
有一次我躺卧在冰上面,至少看到了三种不同的梭鱼,一种扁而长的,钢灰色,像一般从河里捉起来的一样;一种是金晃晃的,有绿色的闪光,在很深的深水中;最后一种金色的,形态跟上一种相近,但身体两侧有棕黑色或黑色斑点,中间还夹着一些淡淡的血红色斑点,很像鲑鱼。
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He also created the"plumcot". a fruit that is half plum and half apricot;four newtypes of quince tree; ten new kinds of plums and prunes; and anew kind of nut.
他还创造出一种"李子杏",这是一种一半是李子味一半是杏味的水果;此外还有四种新的温柏树、十种新的李子树和梅子树,还有一种新坚果。
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Positive significant correlation between three infection indexes and SDD, and negative insignificant correlation between infection indexes and LIP were found. Fifteen sugarcane varieties could be divided into 6 groups on the basis of the distance more than 1.0. It resulted most ot tested sugarcane varieties had similar smut resistance. It suggested that smut race 1 and race 2 were included in inocula and the condition for Ustilago scitaminea infection was suitable in the crop season by setting up the standard varieties of NCo310, F134, NCo376 and Ya71-374 for smut identification. In addition, the results of sugarcane varieties resistant to smut race 1 and race2 were known by only a simple field trial.
结果显示:9个引进甘蔗品种中,ROC26属于感病品种,其余属于抗病或高抗品种;3个病情指数和持续发病期的两两相关均为显著正相关,潜伏侵染期与这些参数的相关为负相关,但未达到显著水平;在类间距离大于1.0的条件下,可将15个品种聚为6类,进一步明确了各品种抗黑穗病性的相似程度;抗性鉴定标准对照种NCo310、F134、NCo376和Ya71-374的应用,明确了接种源为小种1和小种2,通过一次接种试验,明确了供试品种对2个小种的抗性水平,标准对照种的抗性表现,还说明了本生长季发病条件基本是适宜的。
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In addition, the community types, structure and ecological relationships were also analyzed in this thesis.x~2-test and Spearman's rank correlation coefficient were used toanalyze interspecific relationships of 8 dominant tree species, 13 dominant shrubs and 20 dominant herbs respectively.
采用χ~2检验和Spearman秩相关系数检验研究了小叶鹅耳枥群落的种间关系,分别测定了8种乔木、13种灌木和20种草本在群落中的种间联结性和相关性。
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Another display shows the 1914 Yuan Shih Kai Dollar (Y329 type) with three different edges – with ordinary reeding, with a "Greek border" or alternating "T" design on the edge, and with a sort of "herring bone" design edge, in which curved, raised bars alternate with raised boxes.
另一个被展出来民国三年袁世凯头像壹圆(Y329 type,不知是啥,可能是PCGS的标识吧)也有三种不同的齿边,一种也是普通的刻槽直齿边,一种呢,是被称作"希腊边"的样式,也就是字母"T"上下交叉排列设计的的一种齿边样式②,第三种齿边样式有点类似於鲱鱼的骨头,末端呈弯曲的样子,凸起阴刻的线条连接著这些凸起末端弯曲的像隔栅线③。
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Of which there are twenty fatty acids, fifteen free amino acids, fourty four volatile oils, three alkaloids, a sucrose and β-sitosterol.
作者从苦参中共分析鉴定出87种成分,其中脂肪酸20种,游离氨基酸15种,挥发油47种,生物碱3种,蔗糖及β-谷甾醇。
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In the experiment besides entire spermatophore transplantation and spermaduct transplantation, partial spermatophore transplantation and semen transplantation were firstly used in artificial insemination of Fenneropenaeus chinensis. Artificial insemination rate, fertilization rate and hatching rate were compared among the four methods. The results indicated that artificial insemination rate of four methods was high, the highest was 80.8% and the lowest was 53.3%.
在常规的精荚移植和输精管移植两种中国对虾人工授精方法的基础上,首次建立了精荚切块移植和精液移植两种新的人工授精方法,并对比了4种方法的授精成功率、受精率和幼体的孵化率。4种方法都取得了较好的授精成功率,其中完整精荚移植法最高,为80.8%;输精管移植法最低,为53.3%;其他两种方法依次为:精液移植法为73.9%,精荚切块移植法为66%。
- 推荐网络例句
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Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.
在对危险的南部地区访问时,他斥责什叶派民兵领导人对中央集权的挑衅行为。
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In fact,I've got him on the satellite mobile right now.
实际上 我们已接通卫星可视电话了
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The enrich the peopling of Deng Xiaoping of century great person thought, it is the main component in system of theory of Deng Xiaoping economy, it is a when our country economy builds basic task important facet.
世纪伟人邓小平的富民思想,是邓小平经济理论体系中的重要组成部分,是我国经济建设根本任务的一个重要方面。