英语人>网络例句>种 相关的搜索结果
网络例句

与 种 相关的网络例句 [注:此内容来源于网络,仅供参考]

Determined the core species and the species concerned, the core species contains 8 species of fishes, 7 species of amphibians, 3 species of reptiles, 7 species of mammals, 7 species of birds, 10 species of plants, and 7 types of plant communities, totally 38 species and 7 types of communities. Four species of waterfowls: Siberian Crane, Oriental White Stork, Lesser White-fronted Goose and Chinese Merganser are among the 7 species of core bird species.

确定了核心物与受关注物,其中核心物分别包括鱼类8、两栖类3、爬行类3、兽类7、鸟类7、植物10,植物群落7,共38个物与7群落。7鸟类核心物中,水禽有4,即白鹤、东方白鹳、小白额雁、中华秋沙鸭。4。

Major results were summarized as follows:(1) A total of 58 tree species from 53 genera in 36 families among which 8 species were Rosaceae, 5 species were Liliaceae, 5 species were Eriaceae, 3 species were Ranunculaceae, 3 species were Compositae, 2 species were Cupressaceae, 2 species were Caprifoliaceae, 2 species were Umblliferae, and other 28 tree species were only one receptively. These were recorded in the 8 plots of the A. georgei var. smithii forest;(2) Number of families, genera, species and Margalef index correlated negatively with altitude (P.05), with a peak at 3600 m.(3) Shannon-Wiener index correlated negatively with altitude (P.01), and maintained stable at the altitudes between 3700~4100 m, evenness with altitudes, however, this trend was insignificant.(4) Jaccard index increased sharply with increasing altitude at the altitudes between 3600~4100 m, and was lower between different vegetation types at the altitudes between 4100~4200. Cody index β(subscript c decreased with an increasing altitude, but there were 2 troughs between 4000~4100 m and 4200~4300 m.(5) Maximum tree height H(subscript max and HH(subscript max=37 mcorrelated negatively with altitude (P.05); but basal area and BA BA(subscript max=5.3m^2 correlated with altitudes, however, this trend was insignificant.

结果表明:(1)在调查的8个急尖长苞冷杉林样地内共有植物58,分属于36科53属,其中植物较多的科有蔷薇科8、百合科5、杜鹃花科5、毛茛科3、菊科3、柏科2、忍冬科2、伞形科2,其余的28科各只有1个;(2)物科、属、数、Margalef指数D(下标 M与海拔存在显著的负相关性(P.05),在分布急尖长苞冷杉最低海拔3600m处出现物丰富度的最大值;(3)多样性指数与海拔之间有极显著的负相关性(P.01),并且在3700~4100m之间多样性指数保持稳定;均匀度指数与海拔梯度之间存在负相关性,但不显著;(4)Jaccard指数C(下标 j在海拔3600~4100m随海拔的升高而升高,在生境过渡带的4100~4200m之间Jaccard指数C(下标 j较低;Cody指数β(下标 c随海拔的升高呈下降的趋势,但在4000~4100m和4200~4300m 海拔区间出现2个低谷;(5)最大树高H(下标 max和最大胸径DBH(下标 max与海拔之间存在显著负相关性(P.05);胸高断面积之和和立木密度与海拔之间存在负相关性,但不显著。

A total of 106 species were recorded as being eaten by Asian elephants, among them 83 species were identified in elephant's dung. Plant families that contributed a major proportion of elephant's diet in the study area were: Gramineae (8 spp., 10.0%), Moraceae (7 spp., 9.9%), Papilionaceae (4 spp., 8.4%), Araliaceae (3 spp., 6.6%), Vitaceae (3 spp., 5.7%), Apocynaceae (3 spp., 4.6%), Musaceae (1 spp., 4.2%), Zingiberaceae (3 spp., 3.7%), Myrsinaceae (3 spp., 3.6%), Rosaceae (3 spp., 3.6%), Euphorbiaceae (5 spp., 3.3%), Ulmaceae (2 spp., 3.0%) and Mimosaceae (4 spp., 2.9%).

结果显示,野外跟踪调查共记录有106植物被亚洲象所取食,其中有83出现在象的粪便中,这些类分别属于:禾本科8(10.0%)、桑科7(9.9%)、蝶形花科4(8.4%)、五加科3(6.6%)、葡萄科3(5.7%)、夹竹桃科3(4.6%)、芭蕉科l(4.2%)、姜科3(3.7%)、紫金牛科3(3.6%)、蔷薇科3(3.6%)、大戟科5(3.3%)、榆科2(3.0%)、含羞草科4(2.9%)13个植物科。

In this thesis,the AM1,MNDO,MINDO/3(mainly AM1)and INDO/S-CI semiempirical MO methods were used toinvestigate the excited-state intramolecular protontransfer reactions of salicylic acid derivatives—salicylic acid,methyl salicylate,salicylaldehyde,o-hydroxyaceto-phenone,salicylamide and 3-hydroxy-picolinamide (6 conformers and 2-3 anion species);2-(2'-hydroxy-5' methylphenyl) benzotriazole(4 conformers),2-(2' hydroxyphenyl) benzimidazole (3 conformers and 3anion species),Bis-2,5-(2-benzoxazolyl)hydroquinone(3 conformers),2-(2'-hydroxyphenyl)benzothiazole(2conformers) and 7-azaindole dimer (2 conformers).Theinvestigations were described as follows.Geometry optimization,relative stability andhydrogen bonding energy First,for sylicylic acid derivative molecules,the AM1,MNDO and MINDO/3 methods were used toinvestigate ground-state geometry optimization,energies,relative stabilities and hydrogen-bondingenergies on the five kinds of the molecules(designing 6 conformers and 2-3 anion species).Comparing with experimental data,the optimizedgeometry,the order of stability,the hydrogen-bonding energies and the distances between O-O in O-H..O hydrogen bonds by AM1 method were in agreementwith the experimental data,however,the C-C bondlengths optimized by MNDO and MINDO/3 were longer,C-O and O-H bond lengths were shorter;for C-N bondlengths,the results opitimized by MNDO method werethe same as those by AM1 method,nevertheless the C-Nbond lengths given by MINDO/3 method were muchshorter.For some sylicylic acid derivatives(e.g.methyl salicylate,salicylamide),the order ofstabilities on the conformers given by MNDO andMINDO/3 methods were not in agreement with theexisting conformers deduced by experimental methods,and the hydrogen bonding energies calculated by MNDO.and MINDO/3 methods were smaller.Second,the studyon the other systems found that the optimizedgeometry of the proton-transfered product with INDOmethod could not be obtained,only could theoptimized geometry of reactant be obtained,and thecalculated hydrogen bonding energies were greater.Many results of calculation indicated that the studyon the excited-state intramolecular proton transferreaction system using AM1 method was suitable andreliable.

本论文用AM1、MNDO、MINDO/3(主要是AM1)和INDO/S-CI半经验分子轨道方法对水杨酸衍生物系列——水杨酸、水杨酸甲酯、水杨醛、O-羟基乙酰苯酮、水杨酰胺和3-羟基吡啶酰胺(6异构体和2-3阴离子);2-(2'-羟基-5'-甲基苯基)苯并三〓唑(4异构体);2-(2'-羟基苯基)苯并咪唑(3异构体和3阴离子);2,5-二间氮杂氧茚氢醌(3异构体);2-(2'-羟基苯基)间〓杂硫茚(2异构体)和7-〓吲哚二体(2异构体)的激发态分子内质子转移反应在以下几个方面进行了较系统的理论研究:几何构型优化和相对稳定性及氢键能首先以水杨酸衍生物系列分子为例,用AM1、MNDO和MINDO/3方法考察了5分子(每分子设计6异构体和2-3阴离子)的基态几何构型优化,能量、相对稳定性和氢键能计算,通过和实验数据进行比较,AM1方法给出的优化几何构型、稳定性次序、氢键能和O—H。。。O氢键的0—0距离与实验数据吻合最好,MNDO和MINDO/3方法优化的C-C键长偏长,C-O键和O-H键长偏短;对于C-N键长,MNDO和AM1优化结果差别不大,而MINDO/3给出了过短的C-N键长,MNDO和MINDO/3方法给出的有些水杨酸衍生物分子(如水杨酸甲酯和水杨酰胺)异构体的稳定性次序和实验上推测的可存在异构体结果不一致,MNDO和MINDO/3方法给出的氢键能偏低,对其他体系的研究发现INDO方法常常不能得到质子转移产物的优化几何构型,只能得到反应物的优化构型,并且估算的氢键能偏高,大量的计算结果表明AM1方法对本论文研究的激发态分子内质子转移反应体系是适宜和可靠的。

Result 237 species belongingto 62 genera, 14 families have been recorded, of which Culicidae 9 species, Ceratopogonidae 19 species, Tabanidae 23 species, Simuliidae 6 species, Phlebotmidae 3 species, Pulicoidea 143 species, Ixodidae 7 species, Trombiculidae 23 species and Leeuwenhoekiidae 4 species.

结果-获得青海省医学昆虫237,隶属14科62属,其中蚊科2属9,蠓科2属19,虻科5属23,蚋科1属6,白蛉科2属3,蚤类6科37属143,硬蜱科4属7,恙蟎科6属23和列恙蟎科2属4

The internationally scarce black-soil belt resource and sunshine belt of japonica rice plantation in sub-frigid zone of north latitude 45°, implemented the effortful "Ten Respective Projects": respective-breed reproducing, planting, managing, harvesting, transporting, storing, processing, packaging, laying, and selling.

北大荒米业依托国际稀缺的黑土带资源和北纬45°亚寒带粳稻植的阳光地带区位优势,强力实施&十专工程&:专品繁育、专品植、专品管理、专品收获、专品运输、专品收储、专品加工、专品包装、专品存放、专品销售。

A background survey and a species observation on avian were conducted respectively in the Three Gorges Reservoir during 1996-1997,and 1999-2000.354 species,belonging to 17 orders and 51 families were recorded. Among them,153 (43.22%),164 (46.33%),and 37 (10.45%) species are the avian of Palaearctic region,Oriental region and Cosmopolitan respectively. There are 87 species (24.58%) of summer residents,63 species (17.78%) of winter residents,46 species (12.99%) of travelers and 158 species (44.63%) of residents.

1996~1997年和1999~2000年,分别对三峡库区的鸟类进行了本底调查和物监测,共纪录到鸟类354,隶属17目51科,其中古北153(43.22%),东洋164(46.33%),广布37(10.45%);夏候鸟87(24.58%),冬候鸟63(17.78%),旅鸟46(12.99%),留鸟158(44.63%);繁殖鸟类245(69.21%);国家重点保护鸟类9科42

In comparison with the pure standards and the retention indices RI(subscript s reported in the literature, a total of 302 volatile compounds were identified in Changyu XO brandy, including 30 alcohols, 35 aldehydes and ketones, 20 carboxylic acids, 104 esters, 24 substituted benzenes and derivatives, 14 phenolic derivatives, 14 acetals, 16 furan derivatives, 22 terpenic and norisoprenoidic derivatives and 23 others.

实验先采用液-液萃取方法提取张裕XO级白兰地的挥发性成分,然后将酸性成分与碱性和中性成分分离,再采用柱色谱分离手段将其分离为若干个级分并浓缩,采用气相色谱-质谱、标准品比对、保留指数值比较等方法对分离得到的各级分中的成分进行了鉴定,在白兰地中共鉴定出302挥发性成分,包括醇30、醛酮类35、酸类20、酯类104、苯同系物及其衍生物24、酚类14、缩醛14、呋喃类16、萜烯类22和其他物质23

The neutral/basic fraction was furthermore separated into 4 fractions using silica gel normal phase chromatography, and each fraction was then concentrated and analyzed using gas chromatography-mass spectrometry. In comparison with the pure standards and the retention indices reported in the literature, a total of 302 volatile compounds were identified in Changyu XO brandy, including 30 alcohols, 35 aldehydes and ketones, 20 carboxylic acids, 104 esters, 24 substituted benzenes and derivatives, 14 phenolic derivatives, 14 acetals, 16 furan derivatives, 22 terpenic and norisoprenoidic derivatives and 23 others.

实验先采用液-液萃取方法提取张裕XO级白兰地的挥发性成分,然后将酸性成分与碱性和中性成分分离,再采用柱色谱分离手段将其分离为若干个级分并浓缩,采用气相色谱-质谱、标准品比对、保留指数值比较等方法对分离得到的各级分中的成分进行了鉴定,在白兰地中共鉴定出302挥发性成分,包括醇30、醛酮类35、酸类20、酯类104、苯同系物及其衍生物24、酚类14、缩醛14、呋喃类16、萜烯类22和其他物质23

Totally, 147 flavor compounds, which comprised of 17 acids, 12 alcohols, 16 aldehydes, 36 esters, 12 furans, 13 ketones, 14 miscellaneous compounds, 8 phenols, 6 pyrans, 4 pyrazines, 3 pyrroles, 6 sulfur-containing compounds, were identified.

共鉴定出147风味化合物,其中酸类17、醇类12、醛类16、酯类36、呋喃12、酮类13、杂环化合物14、酚类8、吡喃6、吡嗪类4、吡咯3、含硫化合物6

第2/100页 首页 < 1 2 3 4 5 6 7 8 9 ... > 尾页
推荐网络例句

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。

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

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。