The roll is increased and severer than shipping state when the frequency of wave is similar as the natural rolling frequency of ships.

船舶在系泊或低航速状态下，当涌浪周期接近船舶自然横摇周期时，船舶摇摆比航行时更为剧烈。

youdao

Natural Deodorant Protection - Crystal Body Deodorant Roll-on is made of natural mineral salts and is completely free of perfumes.

水晶透明滚珠体香剂是由天然矿物盐制成，完全不添加任何香料。

youdao

A nonlinear parametric excitation equation is obtained for ships in longitudinal waves, and the dynamic stability is analyzed when the natural frequency of heave and roll are approximately equal.

本文建立了在纵浪上航行船舶的非线性参数激励横摇运动方程，研究了当升沉固有频率接近横摇固有频率时船舶的稳定性。

youdao

The public relations campaign for natural gas is already on a roll.

FORBES

So powerful is this curse, apparently, it can upturn natural law so as to let a baseball roll through a first baseman's legs during a crucial World Series game.

FORBES: Four Mice Of The Apocalypse