regular maintenance interval的意思|示意

美 / / 英 / /

定期维护周期

正常保养周期 ... 正常程序[过程]：regular procedure 正常保养周期：regular maintenance interval 正铲挖土机：face shovel;forward shovel ...

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。