中英释义：
这个熔炉需要定期维护。
This furnace needs regular maintenance.
配电箱需要定期维护。
The switch box needs regular maintenance.
这台光机需要定期维护。
This calender needs regular maintenance.
轨道系统需要定期维护。
The rail system needs regular maintenance.
这些器材需要定期维护。
This equipment requires regular maintenance.
汽车的轴需要定期维护。
The shafts in the car need regular maintenance.
这个反应釜需要定期维护。
This reaction still needs regular maintenance.
船的推进器需要定期维护。
The ship's propeller needs regular maintenance.
船内的发动机需要定期维护。
The inboard engine needs regular maintenance.
这台机械需要定期维护。
This piece of machinery needs regular maintenance.
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定期
regular; scheduled; periodic; fixed-term; rolling; schedule; fix a date; regularize; regularise; regular basis; regularly; periodically
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维护
maintain; uphold; defend; preserve; protect; support; keep; sustain; service; redeem; assert; care for; keep up; stand by; look after; stick up for; maintenance; upkeep; preservation; defense; servicing