propanoic

英

美

[网络] 初油酸乙酯

网络

双语例句

• Process and Economic Evalution of Propanoic Acid Produced by Propionaldehyde Oxidation Method
  丙醛氧化法生产丙酸的技术与经济
• The effects of propanoic acid accumulation on the growth and acid-production of Propionibacterium shermanii
  丙酸积累对薛氏丙酸杆菌生长及产酸的影响
• The effect of different factors, such as reaction time, the amount of catalyst and the ratio of iso-amyl alcohol to propanoic acid on the yield of iso-amyl propionate were carefully studied.
  以二苯胺甲烷磺酸盐为催化剂，合成了丙酸异戊酯，考察了反应时间、催化剂用量、醇酸摩尔比等因素对酯化率的影响。
• The matrix of the tobacco flavor is 1,2-propylene glycol, and the primary aroma components in tobacco flavor are menthol, methyl acetate and propanoic acid, 2-hydroxy-ethyl ester and so on.
  AB1香精的主体溶剂为1,2-丙二醇，主要致香物质为2-羟基丙酸乙酯、薄荷醇、乙酸薄荷酯等。
• The synthesis of benzyl propionate from propanoic aid, sodium hydroxide and benzyl chloride in the presence of PTC was studied.
  本文研究了用相转移催化合成丙酸苄酯的方法。
• The results show that catalysts have higher activities, reaction time being short, higher conversion rate of propanoic acid.
  结果表明：此法工艺简单，催化剂用量少，催化活性高，反应时间较短，正丙酸转化率高。
• The catalytic properties of chiral lanthanide complexes in asymmetric synthesis of α-aryl propanoic acid have also been studied.
  研究了部分配合物在不对称合成α-芳基丙酸反应中的催化活性。
• Thep-benzoquinone was oxidized to open the ring and formed other intermittent products such as butanol, butanone, propanoic acid and ethanediol.
  对苯醌开环后，进一步被氧化，中间会生成丁醇、丁酮、丙醇、乙二醇等。
• The simple and fast determination method presented is based on initial chelation of Sn4+, Cu2+, Pb2+ and other metal ions with EDTA and its subsequent decomposition with trihydroxybenzoic acid, mercaptosuccinic acid and dithiocarbamic propanoic acid.
  本文提出的简易、快速测定方法是用EDTA螯合锡（Ⅳ）、铜（Ⅱ）、铅（Ⅱ）和其它金属离子，然后分别用三羟基甲酸、巯基丁二酸和氨荒丙酸解蔽。
• Propanal is an important chemical material which is mainly used to produce chemical intermediates such as propanal, propanoic acid.
  丙醛是一种重要的有机化工原料，主要用于生产丙酸、丙醇等中间体。