查询词典 structural formula

Secondly, the paper will establish the theoretical probability models of structural resistances and loads of highway bridges to analyze their dispersive laws and relevant statistical parameters, and gain the statistical information of structural resistances and loads that the structural reliability design and analysis of highway bridges need.

同时，基于桥梁结构构件抗力的基本特征，主要通过两种间接方法进行抗力的统计分析。3。

In this thesis, the research on the functionary relationship of high temperature and the steel structural member, the thermal response of the steel structural member together with the flame-resistant capability of it and protection methods'influences on it were carried out by analyzing the heat-transfer relationship between fire and the steel structural member.

本课题在分析火源与钢结构构件传热关系的基础上，进行了高温与钢结构构件之间的作用关系和构件热响应的分析，讨论了钢结构构件抗火特性及保护措施对其的影响。

2As for cement-soil of different dates or formula, it is shown by the results of testing that their macrophysics indices correlate closely with the structural indices. Moreover, the micro-structural change under the unconfined compression is revealed.

分析了不同龄期、不同配方下的水泥土样宏观力学指标与其微结构参数——平均结构因子' F 、各向异性系数 A 、平均形状因子' f 的紧密相关关系，同时揭示了水泥土芯样在无侧限抗压过程中强度破坏的内在微观机理。

Moreover, by adopting a structural damage model with double parameters, the formula for calculating structural earthquake damage probability is given.

进而采用双参数的结构破坏模型，给出了计算结构地震破坏概率的表达式。

According to engineering practical requirement,by adopting structural frequency sensitivity formula,a scheme dealing with a parameter calculation model for a structure and its structural optimal model is proposed in this paper,and a three-dimensional structure s frequency topologhy optimal method is developed.

根据工程实际要求，利用频率灵敏度公式，提出了结构特性参数计算模型与三维结构优化模型的处理方案，研究了三维结构的频率拓扑优化设计方法和算法。

Structural natural period s are important indexes to reflect on absorbed seismic energy, a formula for structural frequency is deducted according to variation principle in this paper, various ap.

结构自振周期是直接反映结构吸收地震能量多少的重要指标，本文基于能量变分原理推导了结构频率的计算公式，介绍了工程中计算结构自振周期常用的几种近似方法，讨论了影响结构自振周期的主要因素。

After obtaining spot actual measurement to concern data, consider actual reliability index and wear be no longer in force multiple standard, use formula of rustily craze computation, undertake to structural component part carbonization reliability is analysed, cast life of carbonization of its the rest, can mix by qualitative analysis evaluate structural dependability, upgrade to cast life of its the rest for ration.

在取得现场实测有关数据后，考虑实际可靠度指标和耐久性失效多重标准，利用锈蚀开裂计算公式，对结构构件进行碳化可靠度分析，猜测其剩余碳化寿命，可由定性分析和评估结构可靠性，升级为定量猜测其剩余寿命。

The reservoir rock types in the region of interest are grain limestone, algal limestone, cryptite, siltstone, muddy limestone and mudstone. The thesis identified as a result of changes in the deposition causing the heterogeneity in plane, and then the geological oil reserves have been calculated in accordance with the areal heterogeneity.3、Based on the data of core analysis, bore logging, array induction imaging log and FMI, porosity and permeability model were built using regression analysis. Through testing 45 rock samples, a, b, m, n value were obtained and used to calculate single-layer oil saturation value using the Archie formula. According to the theory of laterolog and inductolog, resistivity ratio and cross plot were used to identification effective thickness. Effective thickness was identified delicately in 103 wells. Based on the over work, active porosity and oil saturation was calculated accurately.4、According to observation of 100 pieces of the thin slices, cast thin slices and 383m core in three wells, the chief diagenesis in this area were compaction, cementation, denudation and cataclasis. Cementation and denudation were universally influenced active porosity this area. The intergranular pores, residual pores and secondary pores were formed in thin carbonated reservoir of lacustrine facies.5、The influence of reservoir heterogeneity to reservoir calculation was analyzed systematically using actual data. And the conclusions were as follows:①The principal reason leading to oil distribution unequal is interior structural feature of reservoir in structural hydrocarbon reservoir.

确定了由于沉积微相的变化而导致的平面非均质性，进而在平面上按照平面非均质单元计算了石油地质储量。3、利用岩心分析、常规测井曲线与阵列感应、成像测井资料相结合，分岩性利用回归分析方法建立了储层孔隙度、渗透率模型；通过对45块岩样进行岩电试验，获取了a、b、m、n值，利用阿尔奇公式计算了各单层含油饱和度值；根据侧向电阻率和感应电阻率串并联特性，利用电阻率比值法与常规交会图法相结合重建了有效厚度图版，对全区103口井目的层段进行了有效厚度精细划分，通过以上工作，准确求取了储量计算单元内有效厚度参数、有效孔隙度参数以及含油饱和度参数。4、通过对研究区3口井383m岩心观察，100余块薄片、铸体薄片镜下鉴定得出：油泉子油田上、下油砂山组储层主要成岩作用是压实作用、胶结作用、溶蚀作用和破裂作用，其中溶蚀作用、胶结作用最普遍，这两种作用对有效孔隙度影响最大，以上成岩作用形成了原生粒间孔、粒间残余孔和次生孔隙(如粒间溶孔、粒内溶孔、铸模孔、晶间孔等)为主的薄层湖相碳酸盐岩储层。5、利用实际资料，系统分析了油藏非均质对储量计算的影响，认为：①对于构造油气藏而言，油气藏构造及断裂特征是造成油气分布不均的首要原因，储集条件相同的条件下，构造高部位有利于储存油气，油气在垂向的重力分异体现了油气藏内部构造的不均一特征。

Before we can assign a structural formula to a compound, we must first know its molecular formula.

在确定一个化合物的结构式之前，首先应知道它的分子式。

Appropriate chemical attribute information, such as structural formula, empirical formula, and molecular weight.

适当的化学性质资料，比如结构式，经验式和分子量等。

Now he worked in ajoint venture.

现在他在一家合资企业工作。

More troops in Afghanistan won't change any of the foregoing.

更多的在阿富汗的军队也不会改变之前的状况。