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A convenient procedure for drawing Bezier curves, after the selected point will be able to draw the corresponding Bessel function, while the location of the point can be adjusted to adjust the curve.

详细说明:一个方便绘出贝塞尔曲线的程序,选好点之后就能画出相应的贝塞尔函数,同时可以调整点的位置来调整曲线

The reflectivity of the multilayer is measured at Bessy Ⅱ synchrotron radiation, and the peak reflectivity is measured to be 7.5%.

对衍射仪测量的掠入射反射曲线和同步辐射测量的反射率曲线分别进行拟合,得到的粗糙度和厚度比的结果相近。

In this paper the dimension parameters which influence the electrical properties of the biconical antenna is discussed by means of simulation and experimental test. And a biconical omni-directional antenna array operating within 0.8~3GHz is designed. Its design parameters and the results of the simulation including curves of the VSWR, radiation pattern and the gain within the band are also given.

本文通过仿真与实验测试对影响双锥天线电性能的各种尺寸参数的作以探讨,并且设计了一种可工作于0.8~3GHz的宽带双圆锥全向天线阵,给出了该天线的具体结构尺寸以及仿真后的VSWR数据曲线,E面,H面辐射方向图和频段内各频点的增益值,以及此天线在0.8~3GHz范围内的VSWR测试数据曲线,并进一步提出了一些设计此类天线的关键点。

The photosynthetic rate in July is better than September;the diurnal variation of Pn is the bimodal curve.

比较苹果在7月、9月的光合作用,发现7月的光合作用显著高于9月的光合作用,在7月叶片光合作用的日变化为双峰曲线,9月为单峰曲线

In this thesis, we first discuss the algorithms of arithmetic operations over binary fields using a polynomial basis representation.

本文首先讨论了有限域上基本算术运算的算法,对有限域上的椭圆曲线理论进行了研究,分析了椭圆曲线上的核心算法——数乘算法。

To raise the efficiency of scalar multiplication on elliptic curve,a scalar multiplication algorithm based on double base number system over binary field was improved.

为了提高椭圆曲线标量乘法效率,对二元域上椭圆曲线的基于双基数的标量乘法进行改进。

Assuming a condition cont-rol reserve calculation,combimatively solve the material balance equation of gas recovery and binomial gas recovery equation for gas well,calculate the production curve of gas well and match it with the actual production curve,finally determine the reserve and productivity parameter,this method doesn't need much pressure build-up data,and can calculate the c...

该方法的推导思路是:假设在某一控制储量条件下,联立求解气藏物质平衡方程式和气井二项式采气方程,计算气井采气曲线并将其与实际的采气曲线相匹配,最后确定储量、产能参数。该方法不需要较长的多次关井复压资料,在气藏受水驱影响较小时,还可计算一口探井或气藏试采早期所反映出的气井控制储量,在气藏生产中得到应用,计算结果较为可靠

In this paper,singularity is used to study the classification of singularities of the binormal curves and focal surfaces of a spacelike in Minkowski 3-space,and also establish the relationships between singularities of these and geometric invariants of curves under the action of Lorentzian group.

应用奇点理论方法对三维Minkowski空间内由空间型曲线生成的副法线标型和可展焦曲面的奇点进行了分类,并且研究了在Lorenzian群作用下的空间型曲线的几何学不变量同这些奇点之间的关系。

For fitting ROC curves and getting the area under the ROC curve, we applied the parametric methods of binormal models and ordinal regression models, the semiparametric method of Cox proportional hazards model, the nonparametric methods of Hanley, Delong.

本文采用双正态模型、有序回归模型等参数法,Cox比例风险模型半参数法,Hanley、Delong非参数法拟合了ROC曲线;文中也考虑了样本量的估计、协变量的混杂效应、再抽样技术计算ROC曲线下面积的标准误与可信区间等问题;并研究了SROC分析方法。

If the profile curve has been denoted by a nonuniform rational quadratic B-spline curve, it is very convenient to represent the surface of revolution as a nonuniform rational biquadratic B-spline surface.

只要轮廓曲线用非均匀有理二次B样条曲线来表示,就可相当方便地把旋转曲面表示成非均匀有理双二次B样条曲面。

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And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时,论述了一体化管理体系构建中的几个主要问题,包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。

If you're huffing and puffing at any point during the run, slow down and make sure you can take deep breathes.

如果你任何时候在跑步过程中气喘如牛,降低速度并且确保你能够深呼吸。