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Key words : Duration of fermentation; precursor of oxalic acid; Sclerotinia minor; bioherbicide; virulence 关键词：发酵时间;乙二酸前体;小核盘菌;生物除草剂;致病力
A salt or an ester of oxalic acid. 草酸盐草酸的盐或酯
The yield of oxalic acid dihydrate is70.0%. 以木屑为原料草酸二水合物收率可达70.;0%25。
precursor of oxalic acid 乙二酸前体
Effects of fermentation duration and precursors of oxalic acid on the virulence of herbicide of Sclerotinia minor 发酵时间和乙二酸前体对小核盘菌生物除草剂致病力的影响
The ameliorating effect of oxalic acid was most apparent. 3种有机酸中草酸对铅胁迫的缓解作用最明显。
The yield of oxalic acid dihydrate is up to 80% under the optimum condition. 确定了最佳工艺条件，在此条件下，草酸二水合物收率可达80%25。
Constant current electrolysis was used to study the effect of tetrabutylammonium salt on the reduction of oxalic acid. 用恒电流电解法研究了四丁基氢氧化铵和不同的阴离子在草酸电解还原过程中的作用。
The preparation method of oxalic acid from wheat straw by hydrolysis-oxidation-hydrolysis was investigated. 研究了以麦秆为原料用水解-氧化-水解法制取草酸的工艺方法。
About the noxiousness report of oxalic acid stone and iron bear excessive, also be considered as baseless. 有关草酸结石和铁负荷过量的毒性报告，也被认为是无根据的。
The preparation method of oxalic acid from beet residues with a hydrolysis-oxidation-hydrolysis process was studied. 研究了以甜菜渣为原料用水解-氧化-水解法制取草酸的工艺方法。
The precursor of the modern car was a horseless carriage with a petrol engine. 现代汽车的前身是不用马拉的，装有汽油发动机的车子。
Electroreduction of oxalic acid to glycolic acid was confirmed by cyclic voltammetry. 用循环伏安法确定了草酸可以还原为乙醇酸,证明了从草酸研制乙醇酸的可行性。
The determinations of oxalic acid are aqueous titration,chromatography,fluorimetric method,et al. 其中,草酸的测定方法有滴定法、色谱法、荧光法等。
Abstract: Effect of oxalic acid treatment on postharvest diseases and fruit quality of muskmelons (cv. 摘要：研究了草酸处理对“银帝”甜瓜采后病害及果实品质的影响。
Just as expected, large amount of oxalic acid are found in the reaction system and its concentration increases as the reaction time increases. 正如预期的那样，反应体系中大量草酸被检测到，并且随着反应时间的增加，其浓度不断升高。
Thefirst telephone was the precursor of modern communications networks. 最早出现的电话是现代通讯网的雏型。
The symmetric structure of oxalic acid molecule and two carboxylic group on both ends ensure the stableness of C=C double bond. 草酸分子属于对称结构，两端的羧基使两个碳原子稳定化。
Glycerate 3-phosphate is a precursor of the amino acid serine. 甘油3-磷酸是丝氨酸的前体。
The results show that using ammonium bicarbonate instead of oxalic acid,high purity cerium oxide product containing CeO 2 of 99% could be obtained. 并用碳铵替代草酸生产 99%25的高纯氧化铈产品。