许多老式机械钟表因使用日久、机芯老化、已走时不准,往往被人们弃之一旁不用。若在电子商店花几元钱买块石英钟机芯来换上,这些机械表又能恢复准确走时。下面以老式北极星机械挂钟为例,介绍其改装方法。 Many old-fashioned mechanical watches because of the use of time, the aging movement, have not allowed to go the time, often abandoned by people aside. If you spend a few dollars in the electronics store to buy a quartz clock movement to replace, these mechanical watches can restore accurate travel time. The following to the old Polaris mechanical wall clock, for example, describes the modification method.