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- secondary resin acid 次生树脂酸
- Resin acid was hydrogenated used nano-Ni as catalyst. 使用纳米镍催化剂进行树脂酸的氢化反应。
- Nano-Ni was first used as catalyst for disproportionation of resin acid. 将纳米镍催化剂首次应用于树脂酸的歧化反应中。
- The author analyzed the extractive matter, and confirmed their acid number was 161.8-169.6, the content of resin acid was 9.0%-12.5%and the content of fatty acid was 80.4-85.6%. 分析测定萃取物酸值为161.;8-169
- It was found that isomerization existed between dihydropimaric\isopimaric-type resin acids due to the shift of double bonds. 发现在二氢海松酸\\异海松酸型树脂酸的分子间存在因双键移位而引起的异构现象。
- Keywords Pinus elliottii;oleoresin;resin acid; 湿地松;松脂;树脂酸;
- Fresh soap its components, trace alkaloids, inulin and plant-rich alcohol, as well as chamber and dandelion friedelin diterpene resin acids and other acids have been. 其成份食皂、微量生物碱、菊糖及植物富醇，还有木栓硐及蒲公英萜酸已酸脂等。
- Conjugated unsaturation of abietic resin acids can be removed through catalytic hydrogenation to overcome the shortcomings of oxidation and color degradation in rosin. 将松香催化加氢可去除枞酸型树脂酸的共轭不饱和性,克服其易于氧化变色的缺点。综述了40多年来国内外对松香催化加氢反应的研究进展。
- The results showed that resin acids of pine gum produced the intermolecular hydrogen transfer reaction, and the dehydrogenation of resin acids was promoted by the solvent effect of terpenes. 在此基础上对松脂歧化反应过程进行了初步探讨,认为松脂原料中的酸性物质发生分子间氢转移反应,萜烯烃的存在促进了脱氢反应的进行;
- Her age is of secondary interest. 她的年龄不太重要。
- Keywords Oleoresin;Resin acid;Monoterpene;Neutral diterpene; 松脂;树脂酸;单萜;二萜中性物;
- The basin is made of synthetic resin. 这个盆是用合成树脂做的。
- Keywords Curing reaction Urea-furan resin Acid catalyst; 硬化反应;呋喃脲醛树脂;酸催化剂;
- In secondary school, children get more advanced knowledge. 在中学，孩子获得更深一些的知识。
- A secondary matter; a side issue. 次要的第二位的事; 较次要的问题
- Keywords gum rosin;abietic-type resin acid;MNDO calculation; 脂松香;枞酸型树脂酸;MNDO计算;
- They are made of a common plastic resin. 它们是用一种普通的塑胶合成树脂做成的。
- A secondary mine passageway between two main shafts or tunnels. 次要矿山甬道矿井中连接两条大隧道的小巷道
- This shelf was made of synthetic resin. 这个架子是合成树脂做的。
- The government introduced universal secondary education years ago. 几年前，政府就倡导普及中等教育。
