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Safrole is synthesized from catechol through methylenation, selective bromination and Wurtz - Fittig reaction Respectively in yield 8.%, 7.%, 7.8% and in total yield .9%.
中文意思:
本文研究以邻苯二酚为起始原料,经亚甲基化、选择性溴化、武兹-菲提格反应三步合成黄樟油素,其三步收率分别为8.%,7.%,7.8%,以邻苯二酚计,总收率达.9%。


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Safety investment, so-called "safety cost", is the total safety work consumption, with which the enterprise could unsure safe production, improve operating environment, deal with industrial accident,and prevent professional harmness. 安全投入是企业为保证安全生产、改善作业环境、处理工伤事故、预防职业危害等项工作在安全工作中的总消耗,又称“安全成本”。
Safety of Punching Calculation in Codes and the Demarcation Load of Punching and Cutting Ravage for Calculating Thickness of Slab and Height of Foundation 板厚与基础高度按冲切或直剪计算的“分界荷载”值与规范的安全度
Safrole is synthesized from catechol through methylenation, selective bromination and Wurtz - Fittig reaction Respectively in yield 8.%, 7.%, 7.8% and in total yield .9%. 本文研究以邻苯二酚为起始原料,经亚甲基化、选择性溴化、武兹-菲提格反应三步合成黄樟油素,其三步收率分别为8.%,7.%,7.8%,以邻苯二酚计,总收率达.9%。
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Said remarks in his Orientalism that "Every European, in what lie could say about the Orient, was consequently a racist, an imperialist and almost totally ethnocentric"; 赛义德在《东方主义》中说:“每一个欧洲人,就他关于东方的所论而言,都可以正确地认为是种族主义者,帝国主义者,几乎纯粹的种族中心主义者”。
Salbutamol(Sal),also called tetrahydro-isowuinolin,is a kind of β_receptor agonist which can selective agitate the β_- receptor of TSM . it is used to treat BA clinically . 沙丁胺醇(salbutamol,Sal),又名咳喘宁,是选择性β_-受体激动剂的一种,能选择性激动支气管平滑肌的β_-受体,临床上广泛用于治疗支气管哮喘。
Saline deposits of salt lake consist of more than 0 salt minerals, but the glauber salt, glaserite, pgrotechnite, hanksite, natron, trona and halite are mainly salt minerals. 盐湖盐类沉积有碳酸盐类、硫酸盐类和氯化物型盐类、主要盐类矿物为芒硝、钾芒硝、天然碱、泡碱、碳钾钠矾、石盐等。
Salivary Analysis of Healthy Females and Comparison with Those of Patients with Sjogren's Syndrome 正常女性与Sj(o|¨)gren's综合征患者唾液分析比较
 
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