工程实践中发现，用螺旋翅片管换热器代替光管换热器是一种有效解决磨损问题的方法。
Engineering practice witnesses that the heat-exchangers used of helix finned tubes instead of that used of smooth tubes is an effective method lightening abrasion.
工程实践中发现，用螺旋翅片管受热面代替光管受热面是一种有效解决磨损问题的方法。
Engineering practice witnesses that the heat-exchangers used of spiral finned tubes instead of that used of smooth tubes is an effective method lightening abrasion.
感应型设有光感检测纸张，有纸工作，减少刀片的磨损，也使裁切更准确。
Light inductor helps Intellectual machine to check the paper, no paper no working and vice versa while it also can lessen knife abrasion and correct cutting.
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