聚集

Based on monoid comprehension, we presented an extendable object query translation algorithm which can deal with nested subquery, query with existential and universal quantifier, query with aggregate function, query with sort/group. This algorithm converted the query into joins to the utmost to expect different physical implementations of join to raise execution efficiency.

基于幺群概括，我们提出了一个可扩充的对象查询转换算法，该算法可以处理嵌套子查询、带存在量词和全称量词的查询、带聚集函数的查询、带分组/排序的查询，具有较强的通用性，该算法也体现了我们尽可能地将查询转换成连接以期望用连接的多种物理算法提高执行效率的查询优化思想。

The research of hydrocarbon expulsion effects has not only an important theoretical significance but also a great practical value.

排烃作用是油气聚集过程中的一个重要环节，在勘探中有重要意义。

With development of these industries, there will be two different relations between positive externality and spatial agglomeration.

而这些产业发展起来后，与外部经济、空间聚集之间发生着三种不同的关系。

The value of specific capacitance was 56.4 F/g and the ESR value of the supercapacitor was 12.5 .f On the back surface of co substrate of carbon micro coils, Ni particles exhibited face centered cubic phase and hexagonal close packed phase. Only hcp Ni was found in the vicinity of the gas inlet, and Ni monolith shaped as flat hexagonal plates. Far from the gas inlet, Ni grains aggregated into flat plates without total fusion.

电容器等效串联电阻为12.5.6、碳微线圈碳基底背面有密堆六方和面心立方两种晶格结构的Ni共存；进气口附近，Ni为密堆六方晶格结构，颗粒为近似六边形的扁平晶体；离进气口较远处，催化剂小颗粒聚集成饼状的结构，相互之间没有完全熔合在一起。

Should keep the skin of the face and hands clean, because the surface of the computer screen exist a lot of static electricity, aggregated dust can switch to all parts of the exposed skin of the face and hands of the operator , if it is not be cleaned, over time, susceptible to ugly rash, pigmentation, severe cases may even cause skin lesions, affecting beauty and health.

应经常保持脸部和手的皮肤清洁，因为电脑荧光屏表面存在着大量静电，其聚集的灰尘可转射到操作者脸部和手的皮肤裸露处，如不注意清洁，时间久了，易发生难看的斑疹、色素沉着，严重者甚至会引起皮肤病变，影响美容与身心健康

I found your site to be very helpful in confirming the factual information I've already gathered.

我发现你的网站是很有帮助确认的事实资料，我这里已经聚集。

When he neared Broadway, he noticed the captain's gathering of wanderers, but thinking it to be the result of a street preacher or some patent medicine fakir, was about to pass on.

当他走近百老汇大街时，他注意到上尉身边聚集的那些流浪汉。但他以为这是什么街头传教士或是什么卖假药的骗子招来的人群，正准备从旁边走过去。

If a disease has a genetic basis, it will occur in familial aggregates

如果一种疾病有遗传基础，它将以家族聚集性的方式发生。

Hearse through Fanil When the Office, there are many people gathered in the street pondering and Edward Kennedy in 1980, is in Faneuil announced run for the presidency.

灵车通过法尼尔厅的时候，有许多群众聚集在路边凭吊，1980年爱德华肯尼迪就是在法尼尔厅宣布出马竞选总统。

Neural cell adhesion molecule L1, discovered in the 80s, is one of the matters that can promote nerve regeneration. It can mediate the interaction of cell-to-cell and cell-to-matrix, take great efforts on neurite outgrowth and fasciculation, migration of neural cells, formation of the myelin, structure of neural trace, transmembrane signal transduction, inhibiting apoptosis of neural cells, even on immune system and formation of the tumor. Li is discovered on the mouse's Cerebellar membrane primarily. Thereafter, it also is found in post- mitotic neurons, pre- and non-myelinating Schwann cells and so on.

神经细胞粘附分子L1（L1）是80年代发现的具有促进神经再生作用的物质，它能介导神经细胞与神经细胞之间的粘附，在神经轴突的生长、聚集，神经细胞的转移，纤维髓鞘的形成，神经通路的构建及信号的转导，抑制神经细胞的凋亡甚至在免疫系统、肿瘤的发生等方面均具有非常重要的作用。L1最初是从小鼠的小脑膜中发现，后来发现在有丝分裂后的神经元，髓鞘形成前及非形成髓鞘的雪旺细胞等组织中同样存在。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。