The principle of biological denitrification was introduced in this paper.

The effect of counter-pressure casting parameters on secondary dendrite arm spacing ( SDAS ) of A 357 alloy was studied.

研究了不同工艺条件下,差压铸造不同工艺参数对A357合金二次枝晶间距的影响.

Numerical simulation of dendritic growth process is one of the most interested fields in material science.

凝固组织枝晶生长过程的机理和数值模拟一直是材料领域的研究热点.

A new screening method for aerobic denitrification bacteria and isolation of a novel strain

一种新的好氧反硝化菌筛选方法的建立及新菌株的发现

Study on Aerobic Denitrification in Activated Sludge System

活性污泥系统中好氧反硝化的初步研究

Application of Aerobic Denitrification Bacteria to Traditional Actived Sludge System

好氧反硝化菌在传统活性污泥系统的应用

Study on Aerobic Denitrification during the Ammonia Wastewater Treatment

氨氮废水处理过程中的好氧反硝化研究

Moreover the control ( parameters ) and research progress of aerobic denitrification technology are narrated.

同时阐述了同步硝化反硝化技术的控制因素及其研究进展.

Patients with acute obstructive suppurative cholangitis ( AOSC) and bile-original acute pancreatitis ( BOAP), who had severe complications and whose life signs were not stable, were given ENBD.

急性梗阻化脓性胆管炎（AOSC）和胆源性胰腺炎（BOAP）的病人，生命体征不稳定有严重并发症的行ENBD。

( 2000) found an obvious increase in carotenoids content in detached Boea leaves during dehydration, indicating a protective role of xanthophylls cycle in dehydrated Boea leaves.

邓馨等（2000）的研究结果发现牛耳草离体叶片在脱水过程中类胡萝卜素的含量显著增加，推测可能存在叶黄素循环的保护作用。

There are a good many BOFs with heat capacity smaller than 15t in our country.

我国地方中小型钢厂有很多15t以下的小氧气转炉。

Objective To explore the relationship of the expression of Fas and CD34 antigen and cellular immune function with occurrence, progress, prognosis, outcome and pathological mechanism of benzene poisoning aplastic anemia ( BPAA).

目的探讨细胞免疫功能、Fas和CD34抗原与苯中毒再生障碍性贫血发生、发展及转归的关系。

Results: The epileptiform discharges appeared in norfloxacin combined with BPAA group, accompanied with limb twitching and clonic tonic seizures.

结果：诺氟沙星BPAA组大鼠EEG示痫样放电，并伴有局部抽搐和全身强直痉挛发作等行为学改变；

A new kind of alkylammonium benzoylbenzoate ( BPAA), including primary and tertiary amines with different length of hydrocarbon chain, was synthesized in this paper.

本文合成了一类新的二苯酮羧酸胺盐（BPAA），包括具有不同碳链长度的伯胺盐和叔胺盐二个系列共六种化合物。

A few concepts of D-S evidence theory and D-S evidence combination rule and decision methods are presented and the program of D-S evidence combination rule on Basic Probability Assignment Function ( BPAF) is described. The Combination of Evidences in an Incomplete Frame of Discernment

本文在简要介绍D-S证据组合理论框架基础上，阐述了基于D-S证据组合理论的信息融合一般步骤及决策层判决方法；不完备识别框架下的证据组合方法

Basic probability assignment function ( BPAF) is constructed by Grey Association Analysis in each sensor, and evidences are combined by D-S Theory from multisensor sources in fusion center.

该方法在单个传感器中运用灰关联分析法通过计算灰关联度给出该传感器关于识别框架的基本概率赋值，再在融合中心用D-S证据理论对多个传感器的识别结果进行融合。

Based on the target BPAF ( basic probability assignment function) in D-S evidence theory, the target characteristics fusion problems in the decision layers had been studied.

在D-S证据理论框架下，研究了基于目标基本概率赋值（BPAF）判决的决策层目标属性融合问题。

Based on the measurement of ELINT system, the method to calculate the BPAF with the gray correlation analysis is proposed too.

针对ELINT系统量测数据的特点，提出了基于灰关联分析的BPAF获取方法。

Finally, the association results are obtained by maximizing the basic probability assignment function ( BPAF).

最后通过极大化基本可信度赋值函数（BPAF）得到关联结果。

Research of the target characteristics fusion in the decision layers based on objector BPAF

基于BPAF判决的决策层目标属性融合研究

Calculate the BPAF of each proposition.

利用模糊相似度来构造计算各命题的基本概率赋值函数；