Used in screen process printing printing from rubber plates, and in gravure.应用于四色网印,橡胶版和凹版印刷.Current domestic plastic gravure inks to solvent - based inks, mainly chloridizing polypropylene innovative ink.目前国内塑料凹版油墨以溶剂型油...
Who owns the copyright on this song?谁拥有这首歌曲的版权？The material can be copied without infringing copyright.这份材料可以复制，不会侵犯版权。Copyright expires 50 years after the death of the author.版权在作者死后50年即行终止....
Mining would pollute the lake and denude the forest.采矿会污染湖水，毁掉森林。Factories are no longer allowed to pollute the air with black smoke.不再允许工厂的黑烟污染空气了.She thinks these books pollute the minds of children.她认为这些书腐蚀儿童的心灵....