| 摘要 |
PROBLEM TO BE SOLVED: To enable a fluid to be precisely and stably discharged to a prescribed work place even if a fluid discharger is simply placed without fixing.SOLUTION: A dust suppression system 130 has one or more fluid discharger(s) 132, which discharge fluid FD capable of suppressing dust generation to a work place 102 of a building 104 by remote control. The fluid discharger 132 has an on-off valve 170A to restrict a discharge of the fluid FD to a height of the barycentric position OG or lower. The on-off valve 170A restricts the movement of the fluid FD in a horizontal direction. |
