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- This paper accordingly introduces a derivative curve of waterflooding characteristics based on derivative sensitivity and presents the calculation method. 针对这一问题，基于导数的敏感性特征，引入水驱特征导数曲线，并给出相应的计算方法。
- However,the middle and late period of the pressure derivative curve is quite discrete by the direct well test data,which causes considerable difficulties of the interpretation. 但从实际应用情况来看,直接应用测试数据进行解释做出的压力导数曲线的中后期相当离散,从而对解释造成了相当大的困难。
- By use of the derivative spectrophotometry and computer program, the 0-2 degree derivative curve graph is drawn and measuring parameter is determinated about the ephedrine hydrochloride nasal drops. 应用计算机图形分析技术结合普通（手动式）分光光度计进行导数分光光度法的测定。
- According to sine derivative curve which is put forward by langbein W B,Leopold L B,the situation of mountain river meanders in Yalujiang is analyzed,and a new solution is selection of curvature r. 通过利用拉宾和里奥普提出的正弦派生曲线理论,对鸭绿江山区河流弯道情况进行分析,探讨选取山区河流弯道水流弯曲半径新的方法,采取具有变化曲率半径的正弦派生曲线来规划航道走向,起到了优化环境的作用。
- Complicated phas variation and phase state redistribution exist in condensate gas wells.This may result in considerable effect on derivative curves of well test pressure. 凝析气井存在复杂的相变与相态重新分布，对试井压导曲线有较大影响，正确选定分析直线段是解释成败的关键。
- From the shape of semi-logarithm and dual-logarithm derivative curves of transient testing data,it is comprehensively determined dual percolation system of reservoir. 从不稳定试井资料单对数与双对数导数曲线形态特征入手,可以综合确定油藏储集层的双渗流动系统。
- The falling star described a long curve in the sky. 流星在空中画出了一道长长的弧线。
- A line segment that joins two points on a curve. 弦将两点用曲线连接起来的曲线段
- An organic derivative, such as coal or petroleum. 有机衍生物一种有机衍生物，如煤或石油
- His spine developed a slight curve. 他的脊柱有点弯曲。
- The coast sweeps (away) northwards in a wide curve. 海岸呈一大弧形向北伸展。
- A bend or curve, especially in a shoreline. 弯曲，弓形弯曲或弓形，尤指海岸线
- A wicked curve ball; a wicked imitation. 漂亮的曲球; 惟妙惟肖的模仿
- An acyl derivative of hydrazine. 酰肼一种由肼衍生而来的酰
- An optimist is a girl who mistakes a bulge for a curve. 乐观的人，等于是把(自己身体上)凸出来的部分也错认作曲线的女孩子。
- A mark used as a superscript to indicate the first derivative of a variable. 撇号置于右上角的符号，用以标明变量的第一个导数
- The derivative of the step is the impulse. 阶梯的导数就是脉冲。
- A derivative is defined by a limiting process. 导数是通过一个极限过程加以规定的。
- They spoke a derivative of the Malay language. 他们说一种从马来语派生的语言。
- A highly derivative prose style. 毫无创意的散文风格
