twist density 中文意思是什麼
twist density
解釋
加捻密度-
Moreover, the longitudinal piece is higher twist ( suppressed by a factor i / a / 2 ). the dipole cross section is largely unknown, only at small distance p it can be expressed in terms of gluon density
偶極截面只有在小距離時才能表示成膠子密度的函數，在整個范圍內求解偶極截面，需要解非常復雜的演化方程，目前是不能做到的。 -
Now, the reported fgs can measure many physical parameters including temperature, strain, stress, displacement, pressure, torsional angle, twist moment ( moment of torque ), accelerated velocity, current, voltage, magnetic field, frequency, density, coefficient of thermal expansion, trembling etc. some of the fiber grating sensing systems have been put into practical use
目前，已報道的光纖光柵傳感器可以檢測的物理量有:溫度、應變、壓力、位移、壓強、扭角、扭矩（扭應力） 、加速度、電流、電壓、磁場、頻率、濃度、熱膨脹系數、振動等，其中一部分光纖光柵傳感系統已經實際應用。
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