灭火队的声觉撤退信号是一长声声号。
Acoustic retreat signal for fire party is one long blast with signal whistle.
简单的建筑设备承担了环保责任，达到声觉和视觉的舒适，并在能源和水的消耗上实现了更高的效率。
The environmental responsibility is assumed by simple architectural devices for acoustic and visual comfort, and to achieve greater efficiency in the consumption of water and energy.
简单的建筑设备承担了环保责任，达到声觉和视觉的舒适，并在能源和水的消耗上实现了更高的效率。
The environmental responsibility is assumed by simple architectural devices for acoustic and visual comfort, and to achieve greater efficiency in the consumption of water and energy.
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