It is also a printing plate wear plate occurred a leading cause of dirty, transom produced surface-sulci small reduces moisture-holding capacity, which makes it easier to wear in the dirt.

• 印版磨损也是呈现印版上不净的一不小来因，受到磨损的印版暗地砂目变浅变少，降矮了蓄火本领，由此比力便当在磨损部位呈现上不净的环境。