常规方法

All cultivars of citrus are susceptible to canker and highly susceptible when being artificially inoculated,implying that no function genes resistant to canker resistance have been identified in citrus,pthA is essential for the pathogen to cause hyperplastic canker symptoms on citrus.

然而，到目前为止，尚无一种能根除柑橘溃疡病菌的最佳方法，柑橘品种资源中亦未发现完全抗病的品种，长期的常规育种，也没有获得抗柑橘溃疡病的优良杂种，柑橘抗溃疡病育种没有取得实质性进展。

Ball mill coal pulverized system is a multivariable coupled nonlinear time-varying system which is extensively applied in coal fired power plants and is difficult to be controlled by conventional PID regulating algorithm.

广泛应用于火电厂的钢球磨煤机中间储仓式制粉系统（以下简称球磨机制粉系统或BMPS系统）是一典型的多变量非线性时变系统，各控制量和被控制量之间存在着相当严重的耦合，这些因素使得基基于常规PID方法设计的控制方案多年来几乎没有一套能够长期运行。

Secondly, based on the analysis of SMC theory, characteristics, the causes of chattering and decreased methods, a general sliding mode controller is adopted to the speed control of PMSM in this paper.

接着通过对滑模变结构控制原理、特性、抖振产生原因及削弱方法的分析，给出了一种用于交流永磁同步电机速度控制的常规滑模控制器。

So it is suitable for the conventional DNA extraction of cotton Verticillium wilt pathogen.

结果表明：CTAB法比氯化苄法提取的DNA片段长(50kb)，纯度高(OD260／OD280＝1.56)，且稳定、无污染，适合于常规分子生物学研究；该提取方法中EDTA，NaCl和β-巯基乙醇的最佳配比为10 mmol，1.4 mol和2%。

Methods The spiroplasma morphology was examined by dark-field microscope and transmission electron microscopy. The biological characteristics of the spiroplasmas were investigated by using conventional culture-dependent method and phylogenetic analysis based on 16S rRNA gene and ITS (16~23S rDNA intergenic space) sequence comparisons.

常规螺原体分离、培养方法，应用暗视野显微镜和透射电子显微镜观察螺原体形态，根据16S rDNA和ITS序列构建系统发育树研究螺原体分离菌株可能的分类地位。

Key words］root canal apex locator; periapical diseases; dental pulp cavity; working length; aged

1.2 方法常规开髓揭顶，清理根管，将root zx根管测量仪电极置于被测牙的对侧口角处，探测端接10号k型锉，缓慢进入根管，当测量仪显示到达根尖孔时，用制动片记录其长度，直接摄x线片证实k型锉所到达的位置，确定根管测量仪的准确性。

Backlash and friction are the non-linearities arising in almost all the gear driving systems.

齿隙和摩擦是齿轮传动系统中制约运动控制精度不可避免的非线性现象，常规的PID控制难以达到较好的控制品质，变结构控制是解决非线性系统控制问题的一种有效方法。

Methods All fecal swabs were freshly collected from outpatients with community-acquired diarrhea in our hospital and immediately plated onto six kinds of culture agars: XLD,TCBS,SS, CCDA, MacConkey agar and modified cefoperazone MacConkey agar. Phenotypic characteristics, 16S rRNA gene sequencing, transmission electronmicroscopyand drug susceptibility tests were employed to identify the isolated bacteria.

方法于2005年8月对杭州市第一人民医院肠道门诊就医患者采集粪样，分别接种SS、XLD、CCDA、TCBS、MacConkey琼脂以及改良头孢哌酮MacConkey琼脂等6种平皿，对分离到的可疑细菌进行常规生理生化实验、16S rRNA基因序列测定、透射电镜下形态观察及药敏试验。

This paper sets up the simulator of VAV air-conditioning system using TRNSYS as the platform. The simulator simulates the dynamic performance of the VAV air-conditioning system (including air sub-system and water sub-system) including its local control loops and building. The parameters of airside of VAV system are obtained by experiment in real building system.

本文首先从变风量空调系统中各空调设备和控制部件的仿真入手，以TRNSYS作为软件平台，通过实验的方法获取风侧必要的参数，从而建立起可以模拟变风量空调系统及其常规下位机控制回路运行和控制特性的数字仿真器。

The stratum frame of Yanchang formation in Yan'an area is founded with the sequence-stratigraphy, Chang 6 is anatomised in detail.

分析研究区岩石成岩作用，利用岩心观察、薄片、粒度、常规物性、敏感性、压汞、电镜扫描和实验等多种方法对研究区储层进行分析研究。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。