改进的蚁群算法对该模型进行优化计算，该船的中剖面纵向结构单位长度的重量减轻3.35%，结果表明蚁群算法是行之有效的。

It proved effective that the ant colony algorithm can improve the optimal design. As a result, the weight of the mid ship section structure in unit length may decrease by 3.35%.

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基于米(长度)、克(重量)、秒(时间)和安培(电流)的一种测量单位公制系统。

A metric system of measurement units based upon the meter (length), gram (weight), second (time) and amperes (electrical current).

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公制是基于以米为长度单位，克为重量单位，公升为容积单位的测量系统，它们都是十进位。

The metric system is the measuring system based on the meter for length, the gram for weight and the liter for capacity, which counts by tens.

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