torsion
/ˈtɔːʃən/noun
mass noun
1- the action of twisting or the state of being twisted, especially of one end of an object relative to the other扭, 反扭。
1.1
- the twisting of the cut end of an artery after surgery to impede bleeding（手术后为止血而）将割断的动脉扭转。
1.2
- Mathematics the extent to which a curve departs from being planar【数】挠率。
1.3
- Zoology (in a gastropod mollusc) the spontaneous twisting of the visceral hump through 180°during larval development【动】扭转。
派生词
torsional
adjectivetorsionally
adverbtorsionless
adjective词源
late Middle English （as a medical term denoting colic or in the sense 'twisting' ［especially of a loop of the intestine］）： via Old French from late Latin torsio（n-）, variant of tortio（n-） 'twisting, torture', from Latin torquere 'to twist'.