设计的基本思想是开发一款可适用于超深水应用的，具有最优单位长度质量的混合复合材料和金属/聚合物柔性管。
The design concept consists of a hybrid composite and metallic/ polymer flexible pipe with optimized mass per unit length for ultra-deepwater applications.
一个有用的单位转换器可以帮助您日常计算，包括面积，密度，能源，力，长度，质量，功率，压力，速度，温度和体积的转换。
A useful unit converter can help you make the daily calculation, including conversion of area, density, energy, force, length, mass, power, pressure, speed, temperature and volume.
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