线性趋势线 linear trend
线性趋势检验 linear trend test ; Linear-by-linear Association
之线性趋势 Linear Trend for Ordinal Data
线性趋势模型 linear trend model
非线性趋势 non-linear trend
具有线性趋势的总体 [统计] population with linear trend
进行线性趋势检验 test for linear trend
分段线性趋势 piecewise linear trend
线性回归趋势线 LINEAR REGRESSION TRENDLINES
According to the spatial distribution of the linear trend, we can see that the linear trend of annual average temperature are more obvious upward trend in most areas, the largest warming regional are Tibet, western Sichuan and western Yunnan.
3、从线性趋势的空间分布来看,年平均气温在大部地区均为较明显的上升趋势,增温最大的地区出现在西藏、川西及滇西等高海拔地区。
参考来源 - 全球变暖背景下西南地区气候变化特征分析·2,447,543篇论文数据，部分数据来源于NoteExpress
增长可以用线性或对数线性趋势来表示。
本文研究用正交多项式逼近非线性趋势，然后对残差进行单位根检验的方法。
Orthogonal polynomial approximation is proposed to estimate the nonlinear deterministic trend and then the residual is used to test the unit root.
然而，过去的研究和模拟表明，烷烃的水化自由能并不符合预计的线性变化趋势。
Previous experiments and simulations, however, indicated that the free energy of hydration did not match this predicted linear trend.
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