第一课一It is also important to consider how the design process fits with all functions that must happen to deliver a satisfactory product to the customer and to service the product throughout its life cycle.考虑设计过程如何，满足所有功能也是很重要的，这些功能必须恰好把满意的产品交给顾客，并在整个产品的生命周期内服务该产品。二Such as gears, belt drives, chain drives, shafts , bearings , keys, splines , couplings, sesls , springs , connections (bolted, riveted , welded, adhesive ), electric motors , linear ,motion devices, clutches ,
