• 亚硫酸盐针叶木浆颜浅,木素含量相对较低。

    Softwood sulfite pulp is light colored and contains a comparatively small amount of lignin.

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  • 在总木素含量相同的条件下,非木浆的表面木素覆盖率要高于针叶木浆。

    At the same bulk lignin content level, the surface lignin coverage was found to be higher in the non - wood pulp than in the softwood pulp.

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  • 研究了针叶木和阔叶木硫酸盐浆PFI打浆对各自纤维性质及浆张性能的影响。

    The influence of PFI beating on fibre and handsheet properties of hardwood and softwood kraft pulps was investigated.

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  • 杂交构树APMP与适量的针叶木化学浆配抄,可以制得优等轻型纸和新闻纸。

    The excellent light paper and newspaper could be made with the mixed pulp of APMP and soft wood chemical pulp.

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  • 分析了漂白针叶木化学浆、针叶木机械浆、再生浆和漂白芦苇化学浆的总电荷、表面电荷量。

    The total charges and surface charges of kraft softwood bleached pulp, softwood mechanical pulp, waste pulp and reed chemical pulp were determined.

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  • 北美、欧洲和俄罗斯有占世界资源总量85%的针叶木,而阔叶木集中于拉丁美洲、非洲和东南亚。

    North America, Europe and Russia have most (85%) of the available softwood stock, while the hardwood stock is concentrated in Latin America, Africa and Southeast Asia.

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  • 研究了PAE用量、热固化时间和温度对麻浆、桑皮浆和针叶木化学浆手抄薄型纸湿强度特性的影响。

    The wet-strength properties of three thin handsheets made of hemp pulp, softwood pulp and mulberry pulp with the wet-strength resin (PAE) as the additive were studied.

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  • 研究了以半漂落叶松碱性亚硫酸盐-蒽醌法(AS-AQ)浆代替针叶木漂白硫酸盐浆(NBKP)与白松酸性亚硫酸盐浆(SP)的混合长纤维浆料配抄新闻纸的情况。

    Semibleached alkaline sulfite-anthraquinone larch pulp(AS-AQ)is used as a substitute for the mixed long fiber pulp of NBKP and NBSP in newsprint furnish.

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  • 对长白山北坡苔藓红松暗针叶林中云冷杉倒木的分解及其养分元素的含量进行了研究。

    This paper reported the decomposition and nutrient content of fallen woods in the moss-Pinus koraiensis dark-conifer forest at North Slope of Changbai Mountain.

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  • 相同条件下,针叶材自由基浓度大于阔叶材,这是由于前者木素成分大于后者的缘故。

    Under the same conditions, free radical concentration is more in soft wood than in hard wood due to the higher lignin content in the former.

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  • 松针红蜡蚧虫口密度与针叶变黑呈正相关,受害木的材积生长率受到较大影响。

    The population density shows a positive correlation to the blackening degree of the needle.

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  • 松针红蜡蚧虫口密度与针叶变黑呈正相关,受害木的材积生长率受到较大影响。

    The population density shows a positive correlation to the blackening degree of the needle.

    youdao

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