Determination of dehydroacetic acid and sorbic acid and benzoic acid in food by gas chromatography internal standard method

Direct synthesis of methyl acetate from methanol and ethanol

甲醇－乙醇脱氢法合成乙酸甲酯

Simultaneous Determination of Acesulfame-K, Saccharin Sodium, Benzoic Acid, Sorbic Acid and Dehydroacetic Acid in Moon Cake by HPLC

月饼中安赛蜜、糖精钠、苯甲酸、山梨酸、脱氢乙酸检测方法的研究

Analysis of trace organic components in the tail gas from dehydrogenation of ethanol to ethyl acetate ey GC

乙醇脱氢制乙酸乙酯反应尾气中微量有机组份的气相色谱分析

Dehydroacetic acid ( DHA) as a white or light yellow crystalline powder, is an important chemical raw materials, intermediates and toughening agents, is also a broad spectrum, low toxicity and efficient anti-corrosion, mildew.

脱氢乙酸（DHA）为白色或淡黄色结晶粉末，是一种重要的化工原料、中间体和增韧剂，也是一种广谱性的低毒高效防腐、防霉剂。

The effects of loading, calcination temperature and calcination time on the solid base catalyst preparation conditions on the yield of dehydroacetic acid.

通过实验考察了负载量、煅烧温度和煅烧时间等固体碱催化剂制备条件对脱氢乙酸产率的影响。

Ethyl acetate was synthesized in one step by dehydrogenation of methanol and ethanol over Cu/ Zn/ Al/ Zr catalyst.

在Cu／Zn／Al／Zr催化剂上由甲醇、乙醇脱氢一步合成乙酸甲酯。

Direct Synthesis of Ethyl Acetate by Dehydrogenation of Ethanol Over Copper based Catalysts

负载型铜基催化剂上乙醇脱氢直接合成乙酸乙酯

Developing a quick method for detection of dehydroacetic acid in orange juice

桔子汁中脱氢乙酸的气相色谱快速测定方法研究

Study of CNY 101 type catalyst for dehydrogenation of ethanol to ethyl acetate

CNY－101型乙醇脱氢制取乙酸乙酯催化剂研究

Fas mRNA was up-regulutedand Bcl-2 mRNA was down-regulated by YWN.

异位宁促使异位内膜细胞FasmRNA高表达及Bc1-2mRNA低表达.

The YVO 4 crystal grown by laser heated Pedestal growth ( LHPG ) method utilizing two CO 2 sources.

采用激光加热基座 ( LHPG ) 法,用两束CO2激光加热生长YVO4晶纤.

But according to the things reason, it is only JIA Bao-yus absurd supposition.

但是,按事体情理而论, 它只能是贾宝玉荒诞不经的杜撰式臆断.

The eels lived happily ever after, and the Yus got richer and richer.

以后, 这些鳗鱼们快乐的生活着,余家也越来越富有.

You are asking yur your friend to show some sympathy for your situation.

你正是要让你的朋友对你的遭遇表示一下同情.

Did you ever climb up the hill behind yur house?

你曾经爬上你房子后面的那座小山 吗 ?

Chien-yun also spent a few days with them.

剑云 还留在高家,他住在觉英的房里.

Feng Yun-ching's face was flushed as he hastily made this reply.

冯云卿涨红了脸急口地说.

After a moment's hesitation Feng Yun-ching handed over a hundred dollars.

略一迟疑以后,冯云卿就给了一百块.

Sister Yun was always of a nervous and sentimental temperament.

神为什么要去捉弄这些在家中的人儿?

I have a letter from Sister Yun in which is horribly depressing.

今天接到蕴姊从上海来的信,更把我引到百无可望的境地.