翻译： （箱体板材的原理是） 三明治原理的三层密度板， 密度板之间是有弹性的胶可以吸收震动并把震动变成热能。
It works by sandwiching each layer of MDF with a flexible gel that absorbs any vibrations and turns them into heat.
钢板材质箱体出厂前已覆盖粉末涂层，面漆为灰色的RAL7001。
Steel plate material box factory has covered before powder coating, paint for gray RAL7001.
该玻璃钢材料可以代替金属板材制造货运火车的车厢箱体、轮船的外 壳船体。
The glass fiber reinforced plastic material can replace metal plates to produce the carriage body of a cargo train and the hull of a steamship.
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