在整个使用寿命中，一件含聚酯成分的罩衫要比一件棉制T恤更节约能源。
Over a lifetime, a polyester blouse uses less energy than a cotton T-shirt.
其关键部件在接近使用寿命极限时，产品质量极不稳定。
When its key parts close to their life time, products quality is very unstable.
其关键部件在接近使用寿命极限时，产品质量极不稳定。
When its key parts close to their life time, products quality is very unstable.
应用推荐