外观与妙妙标志方面，双单元封闭和黄金硬件拉链口袋。

Exterior zipper pocket with Miu Miu logo on front, double snap closure and gold hardware.

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为了解决大型桥梁结构局部区域的健康监测问题，提出了一种用于桥梁结构物理参数识别的双单元子结构法。

In order to solve the problem of health monitoring at local area of large Bridges, a double-element substructure method to identify the physical parameters of bridge structures is proposed.

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为照顾不同场地需求，曼声的超低系列中有从12”， 15”， 18” 单个单元和双单元结构的超低音箱供选择。

For meet to increasing demand, subs of 12", 15", double 15", single 18", double 18" are all available from Munson Sub category.

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