To get the best fitting line, you find the line that minimizes the sum of squared distances.
要找到最切合的直线，就是要使，这些距离的平方和最小。
In this letter some problems in calculation and conception of the paper" A New Method for Calculating the Best Fitting Line of the Transduce Based on K-L Expansion Equation- are discussed."
本信中对“一种基于K-L展开式计算传感器最佳拟合直线的新方法”一文中某些计算上和概念上的问题进行了讨论。
This series of lines has the characteristic of one machine with many USES. It just needs changing some fitting like extruding mold, the line can produce 2-3 types of pipes, making best of equipments.
该系列生产线具有一机多用的特点，只需更换挤出模具等配件便可生产2 ~3种不同材料的管材，可最大限度地发挥设备的潜在能力。
This series of lines has the characteristic of one machine with many USES. It just needs changing some fitting like extruding mold, the line can produce 2-3 types of pipes, making best of equipments.
该系列生产线具有一机多用的特点，只需更换挤出模具等配件便可生产2 ~3种不同材料的管材，可最大限度地发挥设备的潜在能力。
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