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The whole reef-building process is closely related to occurrence and development of the metazoan reef-building communities.

群落的整体面貌、生态体系都是由群落内的关键种所决定的,如果将群落内起到核心作用的物种从群落内移走,那么群落的性质,生物的组成和功能都将发生变化。

There are mainly three formulas to name chemicals. First there is the molecular formula this gives the number of each type of atom in a molecule.

命名化学品的分子式主要有三种:第一种给出了分子内每一种原子的数量。

The time and frequency of the polecat searching different preys and burrows were nearly the same. The polecat attacked virtually all prey offered and thus exhibited opportunistic foraging behaviour. However, it did not captured all prey with equal sequence. It first captured the zokor, then the pika and last for the root vole. In addition to using the typical musteline killing method of biting the nape of the neck, the polecat evolved a variety of killing methods suited to a range of prey types depending on the activity, size and anti-predation ability of prey. The zokor was bitten on the head, whereas the pika was killed by bites to the head or throat and the root vole was killed by bites to the head or chest. The time polecats pursued the root vole was the longest, followed by that used in pursuing the pika and the zokor.

实验结果表明:艾虎对三种猎物的搜寻时间和搜寻频次基本一致,在搜寻猎物的过程中并非已知洞道系统中所存在的食物信息,是一种机会主义的捕食者;艾虎除了具有典型鼬科动物捕杀猎物的方法外,能够根据猎物的大小、活动性和反捕食能力采用不同的捕杀方法,在捕杀猎物的过程中首先捕杀高原鼢鼠,其致死部位全部为头部,其次捕杀高原鼠兔,其致死部位除了头部外,明显增加了颈部的比例,最后捕杀根田鼠,其致死部位主要是头部和胸部;艾虎在捕杀猎物的过程中,追击根田鼠的时间最多,追击鼢鼠的时间最少,而用于捕杀根田鼠的时间最少,用于捕杀鼢鼠的时间最多,艾虎捕杀高原鼠兔后单位时间内获得的能量值最大,其次为捕杀高原鼢鼠,而捕杀根田鼠后单位时间内活动的能量值最小。

Their behaviors of visiting and entering the receptive fig were comparatively studied, and further their active time inside the fig was also investigated. The results showed that these two wasp species had intraspecific fighting behavior when they looked for the ostiole, and the fight of D. yangi was more drastic.

结果显示:在搜寻苞片处进蜂口时,2种榕小蜂的种内均出现打斗行为,并且杨氏榕树金小蜂的打斗更为激烈,但种间没有打斗行为发生,杨氏榕树金小蜂总是等待钝叶榕传粉榕小蜂先期进入榕果,然后才跟随着进入。

The difference of seed ventilation was caused firstly by outer seed capsule,and secondly by inner one.

不同种源种子种皮的透气性以外种皮造成的差异为最大,内种皮次之。

In all 6 species, 5S rDNA was located at the paracentromeric region of a pair of middle-sized telocentric chromosome.

结果表明5S rDNA在6种石斑鱼染色体组中,均位于1对中等大小端部着丝粒染色体且靠近着丝点的位置上,种间和种内未观察到差异,在染色体上的分布模式基本一致。

It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.

论文提出了一个全新的加载测试系统种类,该加载系统是在阻尼器工作原理基础上,利用电动机拖动阻尼器运转,从而阻尼器产生一个与运动方向相反的阻尼力矩,该力矩作用在电动机上实现对电动机加载测试;同时,论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构,该种阻尼器的工作特性在一定范围内可进行调节;论文分析了电磁阻尼器的工作原理和结构特点,运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式,分析了涡电流在转子杯内的分布图,并对阻尼力矩计算方法进行了研究,建立了电磁阻尼器的数学模型,分析了电磁阻尼器结构参数和阻尼力矩之间的关系,对电磁阻尼器的设计和分析方法进行了研究,为电磁阻尼器的工程设计建立了理论基础;设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统,对该控制系统硬件电路各部分进行了分析和设计,对软件进行了设计,并对控制电路进行了试验调试,该系统满足所提出的加载指标要求。

Results The intramural capillary lymphatics of rat's rectum were observed in deep lamina propria of tunica membrane and the dermal papilla layer of anal pectin. The intramural capillary lymphatics and lymphatics were both observed in tela submucosa, reticular layer, hypodermis and intermuscular and serosa. The capillary lymphatics in rectums' wall have the similar ultrastructure feature to normal ones. Three kinds of endothelial cells junctions are overlapping junctions, embedding-junctions and end to-end-type junctions. About 21% of cell-junctions are opening types. There are normal organelles and many vesicals in the endothelial of capillary lymphatics.

结果 直肠壁内的毛细淋巴管见於黏膜固有层深部和肛梳区真皮乳头层;在黏膜下层和肛梳区的网状层、皮下组织以及肌层和浆膜层内均有毛细淋巴管和淋巴管,直肠壁内毛细淋巴管的超微结构具有一般毛细淋巴管超微结构的特点,内皮细胞连接有重叠、嵌插和端端连接3种类型,处於开放状态约占21%;胞质内含有一般的细胞器,幷含有大量的囊泡。

The species structure and importance value dynamics of annual plants in herbage synusia during a growth period have been observed, and the ecological mechanisms of these changes have been analyzed also.

通过跟踪观测一年生植物层片在一个生长周期内种类组成及其重要值的变化,并分析变化的生态学机理,得出如下结论:①在固沙区草本层片内,小画眉草的多度、盖度和重要值在群落中所占比例较大,是群落优势种;②在充足的降雨后,一年生植物都突发性萌发,但随着降雨的减少,层片内的一年生植物种群都呈衰退之势,其中小画眉草和虎尾草种群急剧减少,狗尾草、雾冰藜和虫实种群减少幅度不大。

Tigrina cantor. The results indicate that the percentage of polymorphic loci of R. tigrina rugulosa and R. rigrina cantor are 53.77% and 70.79%, respectively; the genetic diversity index are 0.1345 and 0.1780 and the inter-similarity index are 0.4238. The inter-strains genetic distance is 0.6613, indicating that the genetic variations of R.

tigrina cantor的种内种间遗传多样性及种质特异性分子标记,结果表明:中国虎纹蛙和泰国虎纹蛙多态位点比例分别为53.77%和70.79%;遗传多样性指数分别为0.1345和0.1780;种间的遗传相似系数为0.4238,遗传距离为0.6613。

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James, son of Zebedee, and John the brother of James, whom he named Boanerges, that is, sons of thunder

载伯德的儿子雅各伯和雅各伯的弟弟若望,并为他们起名叫"波纳尔革",就是"雷霆之子"

The southern Hungarian university city of Szeged will host part of the project, amounting to 40 percent of the total investment, which will mostly be paid for through Hungary's EU structural funds.

位于塞格德南部的匈牙利大学将负责部分项目,总计占总投入资金的40%。大部分资金将由匈牙利的欧盟结构基金会支付。

If you want a parrot as a pet, make sure it has been hatched in Britain.

如果你想要一只鹦鹉作为宠物,要确保是在英国孵出的。