Acoustic insulation or other appropriate sound-absorbing materials should be used in the construction and finishing of bulkheads, overheads and decks within the sound-producing spaces as well as self-closing noise-isolating doors for machinery spaces.
Acoustic insulation or other appropriate sound-absorbing materials should be used in the construction and finishing of bulkheads, overheads and decks within the sound-producing spaces as well as self-closing noise-isolating doors for machinery spaces.
发出声音处所内的舱壁、天花板和甲板应使用隔音材料和其他适当的吸音材料制造和装修，并应为机器处所安装隔音的自动关闭门。