类
- 与 类 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 dominant insect pests were grasshoppers, leafhoppers, and planthopper on poorly-managed lawns, but Laodelphgax striatellus, Cicadella viridis, Agrotis ypsilon, Rutelidae on well-managed lawns.
粗放管理草坪主要优势害虫有蝗虫类、叶蝉类和飞虱类;而精细管理草坪害虫主要有灰飞虱、大青叶蝉、小地老虎和丽金龟科。
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By tracing the antifungal and antibacterial activities of the volatile oils, it is found that the major active site in fiuit oil of Litsea mollis is aldehydic fraction such as citral, the major active site in oil of Thymus quinquecostatus is phenolic fraction such as thymol and the major active site in ginger oil is high boiling-point terpenic constituents such as β-caryophyllene, eudesm-4 (14)-en-11-ol, et al.
通过抗菌活生追踪发现,毛叶木姜子果油的主要活性部位是醛类成分,如柠檬醛;地椒油的主要活性部位为酚类成分,如百里香酚;姜油的主要活性部位为&高沸点萜类组分&,如β-丁香烯、4(14)-桉叶油烯醇-11等。
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The general formulas of these compounds are as follows:The strobilurin derivatives were synthesized from substitutedβ-keto esters (2) as starting material which were prepared from substituted ketones (1) and dimethyl carbonate. The ester (2) and methyl hydrazine or substituted amidine were dissolved in methanol and the mixture was heated to reflux to obtain the substituted 5-hydroxy-1H-pyrazole (3) or 4-hydroxy-pyrimidine (4). The title compounds were prepared by reacting the intermediates (3 and 4) with substituted halomethylphenyls which contain four active group under basic conditions.
本论文所合成的strobilurin化合物均是以β-酮酸酯类化合物(2)为起始原料合成的,该中间体(2)是由酮类化合物(1)与碳酸二甲酯在碱性条件下反应生成的,中间体(2)与甲基肼或取代脒类化合物在甲醇中回流制得取代的1H-5-羟基吡唑(3)或4-羟基嘧啶(4),中间体(3和4)再与包含四种活性基的苄卤中间体在碱性条件下制得目标化合物。
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The genera formulas of these compounds are as follows:The strobilurin derivatives were synthesized from substitutedβ-keto esters (2) as starting material which were prepared from substituted ketones (1) and dimethyl carbonate. The ester (2) and methyl hydrazine or substituted amidine were dissolved in methanol and the mixture was heated to reflux to obtain the substituted 5-hydroxy-1H-pyrazole (3) or 4-hydroxy-pyrimidine (4). The title compounds were prepared by reacting the intermediates (3 and 4) with substituted halomethylphenyls which contain four active group under basic conditions.
本论文所合成的strobilurin化合物均是以β-酮酸酯类化合物(2)为起始原料合成的,该中间体(2)是由酮类化合物(1)与碳酸二甲酯在碱性条件下反应生成的,中间体(2)与甲基肼或取代脒类化合物在甲醇中回流制得取代的1H-5-羟基吡唑(3)或4-羟基嘧啶(4),中间体(3和4)再与包含四种活性基的苄卤中间体在碱性条件下制得目标化合物。
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Understand and familiarize with the classification, pharmacological effects of analgesic-antipyretic and anti-inflammatory drugs; clinical uses and adverse effects of aminobenzene, pyrazolone and other organic acid.
熟悉解热镇痛抗炎药的分类、共同作用与特点,苯胺类、吡唑酮类及其他有机酸类的临床应用特点与不良反应。
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The main food items also varied monthly, and changed from small-sized to relative large-sized species. The main diet composition included polychaeta and crab in May, fish and amphipoda in June, fish and polychaeta in July, empty stomach in August, and fish and shrimp in September.
主要饵料生物组成有明显的月变化,且食物个体有逐渐增大的趋势,其中5月主食多毛类和蟹类,6月主食鱼类和端足类,7月为鱼类和多毛类,8月样本较少且为空胃,9月为鱼类和虾类。
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This paper analyzed the nutrient content of Andrias davidianus, including protein, fat, calcium and phosphorus; compared the nutrient content of 17 amino acids in protein and the main trace elements in muscle of Andrias davidianus with other high-quality aquatic products (fish, shellfish, shrimp, turtle class, frogs, and snakes); and concluded that Andrias davidianus is a new kind of aquaculture with high nutritional value and significant economic benefits.
张红星1,王启军1,赵虎3,张驰2(1陕西省动物研究所,西安,710032;2 汉中天成生物工程有限公司陕西汉中,723200;3河北农业大学动物科技学院,河北保定 071001)摘要:本文分析了大鲵常规营养成分(蛋白质、脂肪、水分、灰分、钙和磷)的含量,同时对其蛋白质的17种氨基酸和肌肉中的主要微量元素铁、铜、锰、锌进行了与其它优质水产品:鱼类,贝类,虾类,龟、鳖类,蛙、蛇类的营养成分的比较,表明大鲵是一种营养价值极高的经济效益显著的水产养殖新品系。
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No problems arise if instanceis an instance of the given exception class. However, if instance is not anis an instance of the given exception class. However, if instance is not an
然而,如果实例不是这个类或其子类的实例,则会复制当前异常实例为参数来创建一个新的该异常类的实例。
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The large-scale soil animal sorts were gathered by hand, while the medium and the small soil animals were separated by the funnel law and the funnel law, totally 314 soil animals were caught, which subordinated separately in the mollusk gate ,the annulate gate and 3 phyla 4 class 12 order results showed that the ball tail phyla and the hymenoptera prospect, tubing up 57.54% of the total phyla ,are the dominant class groups and main part of soil animals in this area; The hymenoptera ant class, the coleoptera larva, the arachnids, man kind of, the gastropoda is the common class group the hymenoptera are the common class groups .these result indicate that the community multiple of soil animal's degreases progressively basically among different soil strata sing soil depth and has an obvious aggregation .
结果表明:弹尾目和鞘翅目成虫为优势类群,占全捕量的57.54%,是该区土壤动物的主体。膜翅目蚁类、鞘翅目幼虫、蜘蛛类、螨类、腹足类等为常见类群。上述结果显示土壤动物群落的多样性在不同土层中基本上是随土层深度的增加而递减,并且表聚性明显。关键词:枣园;土壤动物;群落多样性;陕西榆林
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Based on the analysis of the resources situation and problems, it has been suggested by the authors that the protection of ecological environment and species varieties of Anura in Gansu should be strengthened.
本文在对甘肃无尾两栖类动物资源状况及存在的问题进行分析的基础上,提出了加强无尾两栖类动物生境和物种多样性保护,从而合理利用无尾两栖类动物资源的建议。
- 推荐网络例句
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The split between the two groups can hardly be papered over.
这两个团体间的分歧难以掩饰。
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This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.
这种做法不仅鼓励了更多的反应,而且减少跟风的可能性。
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The new PS20 solar power tower collected sunlight through mirrors known as "heliostats" to produce steam that is converted into electricity by a turbine in Sanlucar la Mayor, Spain, Wednesday.
聚光:照片上是建在西班牙桑路卡拉马尤城的一座新型PS20塔式太阳能电站。被称为&日光反射装置&的镜子将太阳光反射到主塔,然后用聚集的热量产生蒸汽进而通过涡轮机转化为电力