• 1. fitting to fitting: 管件直接 | 管件直连 | 管件间接
• 2. FTF Fitting To Fitting: 管件直连

• 1.Heat uniformly, sweeping the flame from the fitting to the tube until the flux on the fitting becomes quiet.
  加热要均匀，将火焰从管件扫到管道直到管件上的焊剂变得平静为止。
  dict.yoduao.com
• 2.A stepwise nonlinear fitting procedure was proposed to nonlinear fitting equations that USES Marquardt nonlinear fitting analysis and stepwise linear regression alternatively.
  对于非线性函数线性组合型相关方程，本文提出了交替运用非线性拟合和逐步线性回归分析相结合的方法一逐步非线性拟合。
  dict.yoduao.com
• 3.Finally figure fitting methods like line and circle fitting were used to fit figures in the real image for measuring figure dimension precisely.
  最后，根据图形的亚像素边缘通过直线和圆等图元拟合方法实现图形尺寸的精确测量。
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