Harmonic Motion: experimental board, spring weight, loaded board, counterpoise, stopwatch.

简谐运动：实验板，弹簧秤，载重板，砝码，码表。

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The characteristic of the method is that the floating parameters of the ship can be calculated in time after each unit of weight is loaded on board.

这个方法的特点是，可以依次对每一项船舶装载的重量都计算出相应的船舶浮态参数。

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Some eye witnesses report that a bag was about to be loaded on board, but it exploded during a security check.

一些目击者报告说，一个包裹被装上车，但在安全检查时爆炸了。

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It's powered by a hydrogen internal combustion engine that turns a 44-kilowatt electric generator that runs eight propellers and whatever communications equipment is loaded on board.

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