gravity model的用法和样例：
例句
- Prior to applying a gravity model, one has to calibrate the impedance function.
应用重力模型的之前，你应该先校准阻抗函数。
gravity model的相关资料：
临近单词
gravity law
gravity
Gravity assisted orbital transfer
Gravity tipping composting device
gravity lowpressure steam heating
Gravity-Gradient Test Satellite
gravity-oriented test statellite
gravity point of attachment effect
gravity subsurface drip irrigation
Gravity Anomaly of Magnetic Source
gravity-discharge bucket elevator
gravity and magnetic interpretation
