更为司空见惯的是，他们可能只是假想变量之间的线性关系：当其中一方上升，那么另一方就会按照固定量上升或下降。
Most commonly, they may suppose a linear relationship between variables: when one thing goes up, another goes up or down by a fixed amount.
使用一元线性回归得到了这些因素对水泥色度影响的定量关系。
The quantitative correlation between the factors and cement colorimeter was gained by means of unitary linear regress.
此外，根据线性溶剂化方程建立了定量结构-活性关系用于预测药物肠吸收、血脑屏障通透性和皮肤透过性。
Quantitative structure-activity relationships also have been established to predict drug intestinal absorption, permeation of skin and blood-brain barrier.
对砾石风化与时间关系的定量研究表明，二者关系是非线性的。
Quantitative studies of the relation between weathering and time suggest that the rates of most weathering processes decrease with time.
在分析和研究了图像中非线性畸变的大小与图像像素多少之间的关系基础上，提出了定量表示图像中所含非线性畸变大小的方法。
A method that is used to expressing magnitude of the image nonlinear distortion is brought forward, after relation of the magnitudes of nonlinear distortion and the image pixels is studied.
应用一元线性回归理论讨论了再生轴承选配率与轴承损伤数量之间的定量关系。
Applied the theory of unary linear regression, the quantitative relation between the selection and assembly rate of regeneration bearing and the damaged quantity of bearing is discussed in the paper.
研究得出注射压力及渗透率与工艺充模时间的定量反比关系，以及树脂粘度与充模时间的的定量线性关系。
The quantitative linear relationship between resin viscosity and filling time is also analyzed. The influences of injection gate design are discussed in the research.
研究得出注射压力及渗透率与工艺充模时间的定量反比关系，以及树脂粘度与充模时间的的定量线性关系。
The quantitative linear relationship between resin viscosity and filling time is also analyzed. The influences of injection gate design are discussed in the research.
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