... 持续性趋势 persistence tendency 非线性趋势 nonlinear trend 特性趋势 qualitative tendency ...
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Nonlinear Trend Test 非线性趋势检验
Quartic exponential smoothing method can follow the nonlinear trend of time series better and can also forecast better.
布朗单一参数四次指数平滑能更好地跟踪时序的非线性变化趋势，达到更好的短期预测效果。
The properties, the research progress and the development trend of inorganic, organic and semi-organic nonlinear optical crystals are discussed in detail in this paper.
本文比较了无机、有机、半有机三类非线性光学晶体的性能、研究进展以及面临的主要问题和发展趋势；
As the length of mandrel extension increases, the trend of thinning-rate change can be failed into three stages, namely linear decrease stage, transitional stage and nonlinear increase stage.
随着芯棒伸出量的增加，管材弯曲过程中的壁厚变薄率变化趋势可分为三个阶段即线性下降阶段、过渡阶段和非线性增加阶段。
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