1)  quadratic
二次插值样条
1.
A necessavy and sufficient conditiion is obtained for the quadratic spilne interpolation to be a convexity-preserving one.
讨论二次插值样条的保凸性问题，当给定型值点为ｐ０，Ｐ１，Ｐ２，…，Ｐｍ共ｎ＋１个时，导出通过此组型值点的二次插值样条存在的充要条件。
2)  Secondary
二次
1.
Study on Secondary Seismic Acquisition in Southern Steep Zone in Biyang Depression;
泌阳凹陷南部陡坡带二次采集方法研究
3)  two-step ejecting
二次推出
1.
Througn designing three axial slots in internal threaded portion and optimizing nib structure,a design was made on the injection mould with a two-step ejecting mechanism with non-rotating.
对笔尖内螺纹部分设计三段轴向开槽,优化笔尖结构,设计了二次推出不带旋转机构的自动脱螺纹注塑模。
4)  reheating
二次加热
1.
Reheating Process for the Semi-solid A356 Alloy;
半固态A356合金的二次加热工艺研究
2.
Detection of the Reheating State of Semisolid Hypoeutectic Al-Si Alloy;
半固态亚共晶铝硅合金二次加热状态检测
3.
The effects of processing parameters of semi-solid billets preparation,reheating temperature and holding time on the semi-solid slurry microstructure of AlSi7MgBe alloy by liquidus semi-continuous casting were studied.
采用近液相线半连续铸造技术制备AlSi7MgBe合金半固态坯料,研究制坯工艺以及二次加热温度和保温时间对半固态浆料微观组织的影响,通过组织与性能分析对AlSi7MgBe合金的半固态触变成形性进行了研究。
5)  secondary crack
二次裂纹
6)  secondary dedusting
二次除尘
1.
The contact pattern of boiler auxiliary machinery was modified with the adoption of layer-by-layer coal charging technology,realizing secondary dedusting,improving the heat efficiency and reliability of boiler.
采用分层给煤技术,改造锅炉辅机连接方式,实现二次除尘,提高锅炉热效率和可靠性。
2.
Appropriate choice of top draft hood type is a key point for the modification project of secondary dedusting of converter off-gas at Xingtai Steelmaking Plant.
正确选定顶吸罩类型是邢钢转炉二次除尘改造治理的关键。
参考词条
补充资料：三次样条插值法
分子式：
CAS号：

性质：样条函数中最重要的一种函数。若函数S（x）在区间[a,b]的每一分段[xi-1,xi](i=s,2,…n)上是三次多项式，而整条曲线及其斜率是连续的，便称它是定义在区间[a,b]上的三次样条函数(cubic spline function）。利用拟合的多项式计算函数值，将计算的函数值插入到原有的实验点之间，然后再根据所有实验点拟合成曲线。用三次样条插值法获得的曲线具有很高的精度。

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