The cross - channel ferries are cheaper out of season 旅游淡季时,横渡英吉利海峡的渡船费比较便宜。
2.
The numerical calculation for a channel ferry is carried out to find out the nonlinear rolling response of the ship and displacement response of the slipping vehicles under the simultaneous disturbances 考虑非线性恢复力矩和非线性阻尼力矩的影响,运用浮基多体系统动力学方法,建立了系统的动力学方程。