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1)  approach step by step
多次逼近
2)  multiapproching method
多次逼近法
3)  multiscale successive approximation
多尺度逐次逼近
1.
The multiscale SAGA algorithm,which is based on multiscale successive approximation,can effectively solve the problem.
根据多尺度逐次逼近思想,建立了多尺度逐次逼近退火遗传算法。
4)  n-degree polynomial regression approximation
n次多项式逼近
5)  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。
6)  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。
补充资料:多苯基多次甲基多异氰酸酯
分子式:C6H4(NCO)CH2C6H4(NCO)C8H5NO)X
分子量:350-400
CAS号:9016-87-9

性质:褐色透明液体。相对密度为1.200,折光率1.6240。蒸气压(25℃)为2.13×10-5kPa。

制备方法:将苯胺和甲醛按摩尔比1.6-2.0:1配合,再配入盐酸作为缩作催化剂,加入缩合器中,于90-110℃反应30-60min,得到一定比例二苯基甲烷-4,4'-二胺和多次甲基多苯基甲胺,再经光气化、分离、提纯即可得PAPI和MDI。原料消耗定额:甲醛(100%)150kg/t、苯胺750kg/t、光气850kg/t。

用途:用于制聚氨酯材料,广泛应物于建筑行业、汽车工业、电器工业等作保温材料或垫褥等。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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