The four-colour offset printing press Heidelberg, if a printing plate surface is a zinc or zinc or iron, iron will and Bailers in acid solution from chemical replacement reaction secable, nitrous oxide, drum body cannot ¤j¤?¤? backing and a printing plate, such as the drum surface long soaked in the acid corrosion, instilla secable, a printing plate chrome coated drum for restructuring into it or nickel does not result in more accidents.

四色海德堡膠印機(jī)，如果印版滾筒暗地是涂鋅或鐵，那么鋅或鐵城市與水斗溶液邊的酸起化學(xué)置換不正答生銹人人上人人插人人操、氧化女生性高潮喷水视频，滾筒體不克不及緊貼襯墊物和印版，如滾筒背恒久泡在酸液邊韩国三级片最新，會(huì)爆發(fā)腐化生銹三级片视频黄片，印版滾筒體改成涂鉻或鎳不離不會(huì)爆發(fā)以上變亂。

Compared with progenies of inter-tree-pollinated E.urophyllaagain,progenies of self-pollinated E.urophylla showsignificant inbreeding depression in height,DBH and volume;theyshow no significant inbreeding depression in water content ofgreen wood,basic density and bark thickness;their content of1%NaOH extractives increases significantly,and their maturefiber length decreases significantly.

與尾葉桉株間雜交子代比較农村妇女性A片久久久，尾葉桉自交子代的樹(shù)高日本色区、胸徑和材積具有顯著至極顯著的近交退化，生材含水率日韩av精品视频在线播放、木材基本密度和樹(shù)皮厚度無(wú)近交退化現(xiàn)象九九精选视频，1％NaOH抽提物含量呈略顯著性提高，成熟材纖維長(zhǎng)度呈顯著性減短国内品精久久久久久久国产；尾葉桉自由授粉子代的近交退化規(guī)律大致與自交子代相同在线视频福利第一网，但其退化程度遠(yuǎn)不及自交子代。