英语语法分析

I was surprised by the speediness of their arrival.

他们的迅速到来出乎我的意料之外。

To a ship with good speediness, the performances of ship, main engine, and propeller must match each other.

快速性良好的船舶应使得船、主机和螺旋桨之间的性能综合匹配。

This method not only ensures speediness and robustness of the control system, but also can effectively weaken chattering.

该方法既保证了控制系统的快速性和鲁棒性，又能够有效地削弱颤振。