本说明书介绍了瞄准镜的使用方法和维护、保养常识。
The instruction covers using method and maintenance common senses of sighting telescope.
本文将介绍最基本的计算机硬件维护方法和保养常识。
This article introduces the basic maintenance methods and common sense of computer hardware.
买表就像买车，除了重视品质性能之外，也要了解保养常识，才能确保爱表的使用寿命。
Buying a table is like buying a car, in addition to pay attention to quality performance, but also to understand the maintenance of common sense, to ensure that the life of love table.
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