Regular maintenance of the system should be carried out by trained personnel or the system supplier preferably at quarterly interval.
应由曾受训练的人员或系统供应商定期检查保养系统，宜每季一次。
Regular maintenance of the system should be carried out by trained personnel or the system supplier preferably at quarterly interval.
应由曾受训练的人员或系统供应商定期检查保养系统，宜每季一次。
应用推荐