斜率是表示一条直线（或曲线的切线）关于（横）坐标轴倾斜程度的量。它通常用直线（或曲线的切线）与（横）坐标轴夹角的正切，或两点的纵坐标之差与横坐标之差的比来表示。 斜率又称“角系数”，是一条直线对于横坐标轴正向夹角的正切，反映直线对水平面的倾斜度。一条直线与某平面直角坐标系横坐标轴正半轴方向所成的角的正切值即该直线相对于该坐标系的斜率。如果直线与x轴互相垂直，直角的正切值无穷大，故此直线不存在斜率。当直线L的斜率存在时，对于一次函数y=kx+b，（斜截式）k即该函数图像的斜率。
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双语例句原声例句
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该线性拟合方程的斜率为0.432 cm/张。
The slope of this linear fitting equation is 0.432 cm/sheet.
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为了把这些物理量同我们不是很理解的这个量联系起来，我们必须对斜率有一定的了解。
In order to relate turning these physical knobs to this quantity, which we don't have a very good feel for, we've got to have a feel for the slopes.
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常数a表示垂直截距，b表示消费计划的斜率。
The constant a represents the vertical intercept, and b represents the slope of the consumption schedule.
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And what he found here, which is what you can see and we can all see pretty clearly, is the slope of all of these lines is the same regardless of what the type of metal is.
他在这发现，你们也,可以很清楚的看到，不同金属直线的,斜率是相同的。
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Great. So now we have this ideal gas thermometer, and out of this ideal gas thermometer, also comes out the ideal gas law.
好，现在我们有了理想气体温度计,由此还可以引出理想气体定律，我们可以得到这条，插值出的直线的斜率。
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It's always upward sloping, but it may, after awhile, you get close to satiation where you've got enough.
斜率永远是正的,但是也有可能,你拿的钱够多,效用将不再上升
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