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1)  quartic approximation
四次逼近
2)  gradual approach
逐次逼近
1.
In order to eliminate systemic error caused by different times, different labs, different analysis methods, and to solve some problems in merging maps, we propose a map adjustment theory and gradual approach method, based on a hypothesis that there are same means and standard deviate of data in adjacent small areas between maps.
针对区域地球化学中因不同时间、不同实验室、不同分析手段等原因存在于各图幅数据的系统偏差而造成的图边拼接问题,提出了抑制图幅间数据系统误差影响的图幅平差思想,阐述了图幅平差的数学原理及逐次逼近平差方法。
2.
By means of constructional iterative equationthis paper presents a way to give out the existence and singularity of a type of e- quational root with gradual approach method.
本文通过构造迭代函数,利用逐次逼近的方法给出了一类方程根的存在性与唯一性的判断的一种解决方案。
3.
Kepler s equations can be solved with the gradual approach, which can be further extended to the solution of the non-linear equations.
求解开普勒方程可用逐次逼近法 ,这种方法还可推广到非线性方程的求解问题中。
3)  successive approximation
逐次逼近
1.
Capacitor self-calibration technique used in time-interleaved successive approximation ADC;
时间交叉存取逐次逼近型ADC中的电容自校准技术(英文)
2.
SDP with successive approximation and its application in the operation of multireservoir system;
逐次逼近随机动态规划及库群优化调度
3.
According to IEEE standard for short time disturbance of power quality,a fast successive approximation classification method is developed.
针对电力短时扰动信号具有非平稳、突发性的特点,应用小波变换的多分辨率分析特性检测扰动信号的特征参量,依据IEEE制定的短时电能质量扰动标准,提出了一种逐次逼近型的快速分类法。
4)  approach step by step
多次逼近
5)  higher approximation
高次逼近
1.
Research of modified RA decoding algorithm based on higher approximation
基于高次逼近的改进型RA译码算法研究
2.
This poper studies the higher approximation and error estimates of the solutions of second order linearordinary differential equationWith a large paraxneter u and a simple turning POint by means of a variant of the Gronwall-Bellmaninequality and the properties of Airy functions.
本文运用Gronwall-Bellman不等式及其变形并结合Airy函数的性质讨论了具有一个一阶转向点的合大参数u的二阶线性微分方程的解的高次逼近及其误差估计。
6)  order-reduction approximation
降次逼近
补充资料:1,3,5,7-四甲基四乙烯基环四硅氧烷
分子式:[CH3(CH2=CH)SiO]4
CAS号:

性质:沸点224~224.5℃(101.06kPa)。熔点-43.5℃±0.1℃。相对密度0.9875。折射率1.4342。与八甲基环四硅氧烷性能相似,在微量硅醇钠、硅醇钾或少量浓硫酸作用下,Si-O-Si键断裂重排,生成直链的聚硅氧烷和环状硅氧烷的混合物。  Si-CH=CH2键在有机过氧化物存在下,可进行游离基聚合反应。在铂催化剂存在下,可与Si—H键发生加成反应。可由甲基乙烯基二氯硅烷的水解料催化裂解来制取。用来合成有机硅中间体及高分子化合物提供活性交联点之用,是制备硅橡胶不可缺少的原料之一。

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