A decade ago most ethylene in North America was made using naphtha, an oil derivative: it is this process that has propylene as its by-product.
十年前，北美的大多数乙烯是石油脑(一种石油衍生物)所制：其生产过程所产生的副产物正是丙烯。
LVMH also holds derivative instruments over some Hermes shares and intends to request their conversion. Once that process is complete, LVMH will hold 17.1% of Hermes' capital.
路易·威登集团还持有爱马仕股份的金融衍生工具，打算把这部分资产转为股权，如果完成转换过程，路易·威登将持有爱马仕集团17.1%的股份。
Derivative action (referred to by the letter d) measures and responds to the rate of change of process signal, and adjusts the output of the controller to minimise overshoot.
微分动作(字母d表示)测量并对过程信号变化率进行反应，调整控制器的输出以达到最小的突出峰。
Methods for constructing standard Winner Process can have a very important influence on estimation result of Monte Carlo simulation in the course of pricing financial derivative securities.
在伪蒙特卡罗模拟应用于金融衍生证券定价过程中，标准维纳过程的构造方法对模拟估计的效果具有十分重要的影响。
Since the numerical derivative represents the search direction of optimization process, it's the key information for optimization.
而在优化计算过程中，导数是至关重要的信息，因为它代表了寻优过程的搜索方向。
The second derivative of rats′serum fluorescence spectrum was analyzed to obtained spectral properties during the process of liver fibrosis.
分析了白鼠肝纤维化病变过程中血清荧光光谱的二阶导数光谱。
Concept of PTFE dispersion and its performance are introduced. PTFE glass cloth, its derivative products and PTFE porous metal, preparation thesis and method process are reviewed, respectively.
介绍了聚四氟乙烯分散液的概念和有关性能。叙述了PTFE玻璃布及其衍生产品和PTFE多孔金属的性能和用途，制备原理、方法和工艺。
PTFE glass cloth, its derivative products and PTFE porous metal, preparation thesis and method process are reviewed, respectively.
叙述了PTFE玻璃布及其衍生产品和PTFE多孔金属的性能和用途，制备原理、方法和工艺。
And in the process of producing the concepts of the total derivative and the partial derivative are confused.
而且在整个推导过程中，对于全导数和偏导数的概念没有分清楚。
In the enterprise USES derivative financial instruments in the process of the use of appropriate accounting supervision means risk management is an effective way.
在企业运用衍生金融工具的过程中，利用适当的会计监管手段进行风险管理无疑是一个有效的途径。
It also analysed the principles, the route and technology of synthesis methods, and clarified the new preparation process of two typical aliphatic acid derivative.
并且分析了这几种合成方法的原理、合成路线及合成工艺。具体阐述了两种典型的脂肪酸衍生物脂肪酸甲酯和脂肪酸甲酯磺酸钠的合成新工艺。
Novel optically active triazole derivative, process for producing the same, antifungal agent and method for using the same.
新的光学活性三唑衍生物，其制备方法，抗真菌剂和其应用方法。
The concrete solving process can be reduced to finding derivative, differential equation or integral.
具体求解方法可归结为求导数、求解微分方程或求积分。
In calculus, the process of finding a function whose derivative is a given function.
微积分中求导数为已知函数之函数的过程。
Zhenjiang Jiangnan Chemical Co. , Ltd. glyphosate and its derivative products supporting the relocation of production and engineering process map line diagrams mapping;
镇江江南化工有限公司草甘膦及其配套衍生产品搬迁改造工程工艺流程图制作及单线图制图工作；
The results indicate that the derivative spectra of serum is an effective method to analyse the process of liver fibrosis.
表明二阶导数光谱法分析肝纤维化病变的血清荧光光谱可能是有效的。
A new process for preparing the new fungicide - silicon - containing triazole derivative is described.
摘要对一种新型的杀菌剂-含硅的三氮唑衍生物的合成进行了改进，并给出了一条新的合成路线。
Acryloyl substituted distamycin derivative, process for preparing them, and use as antitumor and antiviral agents.
丙烯酰取代的偏端霉素衍生物，其制备方法，及其作为抗肿瘤和抗病毒剂的应用。
Reliability analysis using First Order Second Moment (FOSM) is important for structural probability design, in which process demands the derivative operation.
一次二阶矩法是目前求解结构可靠性分析的主要计算方法之一，该方法要求功能函数对随机变量的偏导运算。
Diamine derivative, process for producing the same, and bactericide containing the same as active ingredient.
二胺衍生物，二胺衍生物的制备方法，以及含有二胺衍生物作为活性成分的杀菌剂。
Preparation process of 4,4,4-trihalogen butyraldehyde, trihalogen acid and their derivative.
一种制备4，4，4-三卤丁醛、酸及其衍生物的新方法。
The invention also concerns the use of genes in spiramycin biosynthesis process for constructing mutants capable of leading to synthesis of novel antibiotics or derivative forms of spiramycin.
本发明还涉及螺旋霉素生物合成途径的基因用于构建能够导致新抗生素合成或螺旋霉素衍生形式合成的突变体的用途。
It needs neither iterative process nor getting derivative of the intersection point.
同时不需要迭代，也不需要交点的导数信息。
It needs neither iterative process nor getting derivative of the intersection point.
同时不需要迭代，也不需要交点的导数信息。
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