voluntary ceiling 中文意思是什麼
voluntary ceiling
解釋
自動限額-
The electrical and mechanical services department has promptly co - ordinated with the supplier of " smc " ceiling fans for a voluntary preventive maintenance programme on the fans five speed regulators to enhance public safety. the programme will start today ( june 29 )
機電工程署已經與「 smc 」吊扇供應商聯絡,跟進供應商由即日起(六月二十九日)主動為該款吊扇的五速調速器進行預防檢查計劃,以策安全。
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