由于没有转动件，所需维修工作量可减少到最低限度。
Without moving parts, maintenance requirements are cut to a minimum.
对底座和基础要求低，且日常维修工作量少，维修费用低。
Basic requirements of the base and low, and less day-to-day maintenance work, maintenance costs low.
这种方法消除了客房内噪音，减少了维修工作量，节省了电能。
The method also cuts down maintenance expenses and saves electric energy.
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