丁

The results showed that the soil catalase and dehydrogenase activities, soil microbial biomass N and microbial biomass C were restrain somewhat by four acetanilide herbicides at the beginning of cultivation, but can recover soon.

研究表明，培养初期丁草胺、乙草胺、丙草胺和异丙甲草胺对土壤过氧化氢酶和脱氢酶活性、对土壤微生物量氮和微生物量碳有不同程度的抑制，但均能很快恢复，四种供试酰胺类除草剂对土壤生态的影响不大，除草剂之间也没有表现出显著差异；培养初期rac-异丙甲草胺和S-isomer高浓度处理均比常规用药量处理对土壤酶、土壤BN和Bc的影响大。

To explore the effect of occupational exposure to N-butyl acetate on Hepatic and Renal Functions.

目的 探讨职业性接触乙酸丁酯对对工人肝肾功能的影响。

The acylation of 2,3-dimethyl-2-butene by acetic anhydride in the presence of H3PO4 was investigated.

在H3PO4存在下进行了2，3-二甲基-2-丁烯与乙酐的酰化反应。

It was found that H3PO4 is an effective catalyst for the acylation of 2,3-dimethyl-2-butene by acetic anhydride at room temperature.

结果表明，H3PO4是室温下催化2，3-二甲基-2-丁烯与乙酐酰化反应的有效催化剂。

FeCl_3 was used to catalyse the acylation reaction of triisobutylene by acetic anhydride at room temperature.

室温下FeCl3用于催化三聚异丁烯与乙酸酐的酰化反应。

It was found that SnCl_2·2H_2O is an effective catalyst for the acylation of 2,3-dimethyl-2-butene by acetic anhydride at room temperature.

发现SnCl2·2H2O是室温下2，3-二甲基-2-丁烯与乙酐进行酰化反应的有效催化剂。

It is readily soluble in toluene, MEK, acetone and other solvents commonly used in adhesive and coating systems.

这种新的改性剂可以溶于甲苯、丁酮、丙酮和其他胶粘剂和涂料系统常用的溶剂中。

Product has mainly engaged in alcohol-benzene toluene xylene butyl acetate ester, such as acetone acetophenone ring.

主要经营产品有甲苯二甲苯醇苯醋酸丁酯乙酯丙酮环乙酮等。

It is broken down via phenylalanine to give acetyl CoA and fumaric acid.

它通过苯丙氨酸降解出乙酰辅酶 A 和反丁烯二酸。

Objective To investigate the expression of muscarinic acetylcholine receptors and GABAB receptors in lamina Ⅱ neurons in spinal cord.

目的观察M胆碱能受体亚型M2和B型γ-氨基丁酸受体在脊髓Ⅱ板层神经元的表达情况。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。