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Based on the mathematical definition and physical meaning, a fast effective method was studied to calculate mathematical inflection point using computer, and a algorithms was proposed to calculate the mathematical inflection point of discrete data using n
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在数学定义及物理意义的基础上,研究了利用计算机来计算数学拐点的一种快速有效的方法,提出了对于离散数据以非拟合曲线的方式计算拐点的算法。 |
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Based on the mathematical model of the blade, the paper brings forward a way to construct its stereo modeling and NC program, the modeling being set up with the UG Ⅱ software.
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摘要根据叶片的数学模型，提出了建立叶片实体模型和产生数控代码的技术路线和方法，并在UGⅡ软件中完成了实体模型和后置处理。 |
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Based on the mathematical model of these forces, a simulation model is built by using the software of ADAMS.
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并以耙吸式挖泥船为例，根据得出的作用力数学模型，建立了基于ADAMS动力学分析软件的仿真模型进行验证。 |
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Based on the measured data, the change of the friction velocity of turbulent flow and the characteristics of the wall shear stress under different sudden roughnesses and different water depths are analyzed herein.
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通过实测资料分析不同糙率突变和不同水深的紊流摩阻流速变化情况和水流的壁面切应力的特点。 |
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Based on the measured results from three cruises of oceanographic survey carried out in August of 2001 to 2003, in the Changjiang estuary and vicinity waters, the abundance distribution inter-annual features of fish eggs and larvae was studied, and their
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摘要根据2001~2003年间，每年5月长江口及邻近水域现场调查资料，分析了鱼卵仔鱼分布的年际变化特征及其与环境因子的关系。 |
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Based on the measurement, statistic, and analysis of the classified load of typical zones in Ningbi, the city's load density distribution rule is analyzed.
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通过对宁波城市典型区块分类负荷实测、统计、分析，进一步分析宁波市电力空间负荷密度分布规律，以此为宁波市电网规划与建设提供借鉴。 |
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Based on the mechanism of biological phosphorus and nitrogen removal, the collision between on nutrient and resident time is given.
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摘要根据生物除磷和反硝化脱氮的机理，污水的脱氮除磷存在基质竞争和泥龄方面的矛盾。 |
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Based on the mechanism of controlling the dust by wetting agents and by using down-ward capillary seep experiment, the paper presents the research results of the coupling relation between three wetting agents and four dust of lead-zinc ores, of which wett
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摘要从湿润剂控制粉尘的机理出发，采用了十二烷基硫酸钠、水玻璃和十二烷基苯磺酸钠等3种湿润剂，用毛细管正向渗透湿润法，研究了这几种湿润剂对60~80目、80~100目、100~120目和120~180目等4种铅锌矿粉尘的湿润性能。 |
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Based on the mechanism of deformation of rocks, porosity-depth curves of rocks can be divided into tow periods as compaction and compression.
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摘要根据岩石的变形机制，把岩石孔隙度的变化过程划分为压实和压缩两个阶段，岩石压实阶段的孔隙度呈指数规律变化，岩石压缩阶段的孔隙度保持为常数。 |
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Based on the mechanism of hot cracking formation of castings, the cracking defects of furnace door frame castings was analyzed, and found that the main reasons causing cracking are as follows: construction of the casting was not reasonable, gating system
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摘要根据铸件产生热裂纹的机理，对炉门框裂纹缺陷进行分析，找到了裂纹产生的主要原因是铸件结构和浇注系统不合理，以及浇注温度过高。 |
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Based on the mechanism of the effect of unconsolidated confined aquifer on the compound breakage of key strata, the fully mechanized support crushing accidents taking place during coal mining under the unconsolidated confined aquifer and thin bedrock in s
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基于松散承压含水层对薄基岩采场关键层复合破断影响机制，很好地解释华东矿区部分矿井在松散承压含水层与薄基岩的特殊条件下采场发生压架事故的原因。 |
