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The structure of di-n-propyl phosphite and propaphos prepared were identified by IR and 1H-NMR spectra.
中文意思:
二正丙基亚磷酸酯和丙虫磷的结构用IR和1H-NMR表徵。


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The structure of a database or a rowset. A database schema describes its tables, their column sets and indexes; a rowset schema describes its column set. 一个数据库或者数据集。一个数据库模式描述了它的表,列集和索引;一个数据集模式描述了它的列设置。
The structure of band-pass RAKE receiver and the model of demodulation are depicted. 我们给出带通犁耙式接收机模型及解调结构。
The structure of bureaucracy proposed by Max.Weber adapted to modernization mass production. 韦伯提出的官僚制的组织形态是与现代化大生产相适应的组织模式。
The structure of city grading manifests that the combinative relationship between cities in the county of Donghai agrees with the pyramid-pattern with the grading of the scale being inversely proportional to the number of cities in the day. 这一等级结构反映了西汉时期东海郡城市组合关系符合城市规模等级与城市数量成反比的“金字塔”模式,对认识西汉末年其他郡国城市等级组合关系有借鉴作用。
The structure of city grading refers to the combinative relationship between cities of different grades in a region. 摘要城市等级结构是指区域内不同等级城市之间的组合关系。
The structure of di-n-propyl phosphite and propaphos prepared were identified by IR and 1H-NMR spectra. 二正丙基亚磷酸酯和丙虫磷的结构用IR和1H-NMR表徵。
The structure of electricity heating-tube arid the reason of accident are discussed based on some problems raised in the air-cycle resistance furnace, and the effective measure and several aspects should be taking into account in designing are put fornard 摘要根据电加热管在空气循环低温电阻炉上应用中出现的一些问题,对电加热管的结构和事故原因进行了分析,通过分析提出了有效的改进措施,明确了电加热管在设计中应注意的事项。
The structure of family expenditure which is an important market demand changes constantly, affected by various factors like income, market supply and demand, price, etc.. Moreover, this change and its law is not only the important content of micro-econom 摘要家庭消费作为重要的市场需求,其结构在收入、市场供求、价格等各种因素的影响下不断发生变动,而这种变动及其规律既是微观经济运行的重要内容,又是研究市场供求关系及其运行机制,引导社会生产的重要依据。
The structure of fertilizers was studied by Scaning Electronic Microscopy (SEM), and the nutrient release characteristics were studied using water dissolution rate method and soil column leaching method. [Result] The 24 hours N water dissolution rates of [方法]以不同类型和吸水倍率的高吸水性树脂为包膜材料,以大颗粒尿素和改性矿物包膜尿素为原料肥料,研制出高吸水性树脂单层包膜尿素、高吸水性树脂复式包膜尿素系列产品,利用电子扫描电镜研究了其结构特征,并以水中溶出率法和模拟土柱淋溶法研究其养分释放特性。
The structure of jet-electrodeposition nozzle is optimized according to the analytic result of the flow characteristic. 将解析结果以可视化的速度场给出,从而针对喷嘴过流特性的分析结果,对喷嘴的结构进行改进。
The structure of mirtazpine was confirmed by 1H-NMR (H^1-nuclear magnetic resonance) and MS (mass spectrum), and the purity was 99.79% by HPLC. 1-甲基-3-苯基哌嗪与2-氯-3-制氰基吡啶亲核取代,再经水解、还原和环合等反应得到米氮平,总收率为22.6%,结构经1H-NMR和MS(质谱)确认,HPLC含量为99.79%。
 
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