拔取，指选取，选拔；拔毛取血。语出《国语·楚语下》：“是以先王之祀也……毛以示物，血以告杀，接诚拔取以献具，为齐敬也。”
misc. drawing off
然后医生会仔细检查头皮，判断掉发类型，并可能轻轻拔取少量头发以做检测。
He or she will look closely at your scalp and hair-loss pattern and may gently pull out a few hairs for tests.
本文采用解析法导出了这种差动机构中拔取罗拉的位移，速度和加速度的方程式。
The analytical method is applied in deriving equations for the displacement, velocity and acceleration of the detaching roller installed in the differential mechanism.
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