系统发生

Filamentous bacteria exists in every activated sludge system,the problem of sludge bulking will happen only when filamentous bacteria grows over than zoogloea ,the obove-mentioned problem will not occur when filamentous bacteria and zoogloea equally grow.

任何活性污泥系统中都存在着丝状菌，在丝状菌与菌胶团细菌平衡生长时，不会发生膨胀污泥问题，只有当丝状菌生长超过菌胶团细菌时，就会出现污泥膨胀问题。

In the thesis, the systematic relationships of Acorus together with Araceae and Typhales are discussed on the basis of features from micromorphology, anatomy, pollen morphology and floral development, with the aid of the data from their embryology, cytology, chemotaxonomy and molecular biology.

本文用形态学、解剖学、孢粉学及花器官发生等方法，并借助胚胎学、细胞学、植物化学及分子生物学等方面的资料，比较研究了菖蒲属与天南星科及香蒲目的系统关系。

The emergence regularity and effect on yield of w heat Agromyza albipennis were studied by researching in detail in wheat fields and breeding in laboratory.

摘 要：为摸清麦黑潜叶蝇在天津市的发生规律和对小麦产量的影响，通过田间系统调查和室内饲养观察的方法进行了研究。

Mr Freeman's body, launched by Canberra late last year, is the first with power to manage the entire river system, overriding rivalries between the four basin states, so that calamities such as Lake Alexandrina's don't happen.

弗里曼领导下的机构于全年晚些时候在堪培拉成立，它是第一个有权利整治全国河流系统，以避免亚历山德里娜湖的悲剧又一发生的组织，而在此过程中它完全不过河流流域周围其他四个州的反对。

In addition, the reconstructed phylogenetic tree based on cDNA and DNA sequences encoding C-terminal non-repetitive region of MaSp1 (Major ampullate spidroin-1) also showed that Deinopoidea and Araneoidea are not sister groups.

另外，依据编码大壶状腺丝蛋白-1(MaSp1)C末端非重复氨基酸序列区段的核酸序列重建的系统发生树也证实圆网蛛类并非单系发生。

Pulmonary congestion, systemic congestion, or the anginal sy ndrome may be

充血、系统充血或绞痛症等，这些症甚至在静止时也可能发生。

Large group is formed in the system that black eyebrow adder is developing increasingly, 50 time metaphase investigates statistic according to our country scientist, there is 5-10 of black eyebrow adder on anguine island at that time 10 thousand, can be in anguine island produced in succession of a conflagration to burn 45 days in June 1958, plant of whole snake island almost melt into is cindery.

黑眉蝮蛇在日益发展的系统中形成大型群体，50年代中期据我国科学家调查统计，当时蛇岛上有黑眉蝮蛇5-10万条，可在1958年6月蛇岛发生了一场大火一连烧了四五天，整个蛇岛植物几乎化为灰烬。

In American inchoate development in the course western, as a result of policy oriented cause annihilative to land natural resources development to use, changed the structure of land ecosystem and function, make land natural resources sufferred serious destruction, cause the penalty that gives nature, since May 1934, what the United States happened to stun the world is a chain of " black storm " incident, the lesson is extremely deep.

在美国早期开发西部的历程中，由于政策的导向造成对土地资源毁灭性的开发利用，改变了土地生态系统的结构和功能，使土地资源遭到了严重的破坏，诱发出自然的惩罚，从 1934年 5月起，美国发生了震动世界的一连串&黑风暴&事件，教训极其深刻。

Thus, it is reasonable to speculate that impairment of lung tissues resulting from the imbalance between protease and antiprotease system due to α〓AD may be predisposed to the development of lung cancer, and may also be related to the susceptibility to lung cancer.

AT活性降低使个体发展为肺癌的危险性增加。我们有理由推测由于α〓AT缺乏导致的弹性蛋白酶/抗弹性蛋白酶平衡系统的失衡，进而产生的肺组织损伤可能是肺癌发生的前期病变和重要基础。

is drew that in the clinic nursing of Acute Heart Attack patients, the adoption of systemic nursing can effectively prevent astriction, reduce the risk of syndromes occurring and increase the probability of successful curing.

在对急性心肌梗塞病人的临床护理中，应用系统护理能有效地预防便秘，减少并发症的发生，提高病人的救治成功率。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

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。