• 结果表明碱性亚硫酸钠法蒸煮脱木素比较NSHS低于KP)。

    The results show that the delignification rate is higher for alkaline sulfite cooking (higher than NS and HS, lower than KP) .

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  • 采用电位滴定改进测定甲醛含量中性硫酸钠准确度影响因素进行了探讨。

    In this paper a potentiometric titration was used to improve the neutral sodium sulfite method for determining the content of formaldehyde, and the accuracy and influential factors were discussed.

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  • 连二亚硫酸钠还原检测血浆中一氧化碳血(CO)的含量;

    Plasma carbon monoxide (CO ) was detected according the method introduced by Chalmers.

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  • 中性亚硫酸钠-蒽杨木蒸煮废液(NS - L)碱性亚硫酸钠-蒽醌落叶松蒸煮废液(AS - L)做锌矿成型粘合剂进行了研究。

    Aspen neutral sulfite-anthraquinone pulping waste liquor (NS-L) and Larch alkaline sulfite-anthraquinone pulping waste liquor (AS-L) are used as the adhesive for the forming of zinc ore powder.

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  • 采用化学还原处理离子污水,焦硫酸钠作还原剂。

    The method of chemical deoxidization was used to treat electroplating wastewater which contains chromium ions, and sodium pyrosulfite was used as reducing agency.

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  • 食品安全》严禁使用二氧化硫硫酸钠硫酸钾来处理畜肉禽肉,违规经营场所和商家将被处以罚款。

    The Food Standards Code does not allow the use of sulphur dioxide, and sodium and potassium sulphites in raw meat, poultry and game and businesses may be fined for using it.

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  • 甲酸三乙氰乙酸乙酯缩合,然后羟乙基肼环合、水解等一合成5-氨基吡唑-4-甲酸,然后在硫酸钠存在条件下加热脱羧得到5-氨基-1-乙基吡唑。

    METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.

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  • 甲酸三乙氰乙酸乙酯缩合,然后羟乙基肼环合、水解等一合成5-氨基吡唑-4-甲酸,然后在硫酸钠存在条件下加热脱羧得到5-氨基-1-乙基吡唑。

    METHODS 5-amino-1-hydroxyethyl pyrazole-4-carboylic acid was synthesized through condensation of ethyl cyanoacetate and triethyl orthoformate followed by one-pot methodology of cyclization, hydolysis.

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