在航行中

In order to study the effects of parametrical rolling on the ship movement and tilts, in allusion to ship's navigating in regular following waves, the equation of ship rolling motion is transformed into normal Mathieu equation by proper variable replacement when strong parametrical excitation in restoring moment varied according to sine or cosine wave.

为研究参数横摇对船舶运动和倾覆的影响，通过对船在规则波上随浪航行时，恢复力矩中出现的1个以正余弦规律变化的强参数激励项进行适当的变量置换，将船舶的横摇运动方程转换成标准形式的Mathieu方程。

Four hundred years ago Ponce de Leon set sail into the mysteries of an unknown world in search of the Fountain of Youth, when all the time the secret of that fountain was right within himself.

四百年前 Ponce de Leon 进行了他的神秘航行欲求在未知的世界中找寻"不老泉"的所在，他那时一直相信这股泉水的存在。

He made his own happiness out of such simple things as playing the violin and sailing his boat.

他从拉小提琴、在船上航行等简单的事情中找到了快乐。

Everyone needs friendship. No one can sail the ocean of life single-handed.

人人都需要友情，没有人能独自在人生的海洋中航行。

Everyone need friendship. No one can sail the ocean of life single-handed.

人人都需要友谊，没有人能独自在人生的海洋中航行。

Everyone needs friendship. No one sail the ocean of life single-handed.

人人都需要友谊，没有人能独自在人生的海洋中航行。

As is said, 'Steersman is the most important in sailing'; the management teams headed by the general managers are right steersmen of the enterprises when sailing in the global markets sea.

"大海航行靠舵手"，企业在市场经济和全球化商海中的舵手就是以总经理为首的经营管理团队。

This electronic tide diagram is simple, convenient and practical. By the help of this diagram, mariners can easily find accurate tide height at any time of each tide station. It has a practical value to relax the mariners' work load and reduce errors that may arise to ensure the safety of navigation.keywords : paper "Tide Table" electronic tide diagram, shiphandling, pilotage

在上海港船舶引航实践中试用表明，该电子潮汐图表简单明了、方便实用、易于推广应用；借助该电子潮汐图表，船舶驾引人员可方便地查看每个潮位站任意时刻的精确潮高，对减轻船舶驾引人员工作负担，减少可能出现的差错，保障航行安全具有实用价值。

At 2 pm got under sail and put to sea having on board 94 persons,Cook noted in his log.

库克在他的航行日志中写到："下午2点下海起航，船上有94人。"

The water/metal fuel motor system configuration is based on a numerical simulation of combustion.

水反应金属燃料发动机[1]是一种全新概念的水下高能量密度推进系统，其工作原理为：雷外海水在速度头作用下进入燃烧室，与燃烧室中以一定形态存在的金属燃料发生强烈放热反应，产生的热量使未参与反应的海水受热蒸发，混合高压气体通过发动机喷管膨胀做功产生推力，从而推动水下航行

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。