矾

Eleven α-V-group cation-substituted toluenes (1) and acetophenones (2)were synthesized. The equilibrium acidities of these compounds were determined indimethyl sulfoxide solution by the "Overlapping Indicator Method" and the homolytic C-Hbond dissociation energies were derived from a thermodynamic cycle combining pKawith oxidation potential of carbanion.

合成了α-位有第V、Ⅵ主族元素杂正离子取代基的甲苯系列（1）和苯乙酮系列（2）共11个Ylide前体化合物，用重迭指示剂法首次测定了其在二甲亚矾溶剂中的酸性解离常数PKa，同时结合碳负离子氧化电位的测定，通过热力学循环估测了它们的气相均裂键能。

The results indicated that new Lewis acid ferric potassium alum was a green catalyst for the synthesis of ethyl lactate.

研究了新型Lewis酸铁钾矾的制备，并以该Lewis酸为催化剂，通过乳酸和乙醇反应合成乳酸乙酯，考察了催化剂用量、反应时间、酸醇物质的量比对酯化率的影响。

For the first time,a Raman microscopic investigation of the patinas grown on the beautifully shaped bronzes collected in the Dengzhou Museum ,Penglai City,Shandong Province,was done.

首次运用显微喇曼光谱技术，对山东省蓬莱市登州博物馆馆藏古代青铜器的锈蚀产物进行分析，发现锈蚀产物的成分比较复杂，主要有蓝铜矿、孔雀石、氯铜矿、副氯铜矿、白铅矿、黄铅矾及方解石。

A comparative research on the ombudsmen institution may undertake in two aspects :One is the comparative research on norms, such as qualifications, organs, mechanisms, jurisdictions and power limits; Another is the comparative research on functions, namely, its special characteristics and indisplaceable status are demonstrated through the comparative study between the ombudsman institution and the parliament supervision, the judicial supervision and the internal supervision.

行政监察专员制度的比较研究可以从两个方面进行：一是进行规范比较，即对行政监察专员的任职资格、组织机构、运行机制、职责范围、权力界限等进行系统的、全面的比较分析；二是进行功能比较，矾究和阐述行政监察专员制度与议会监督机制、司法救济机制、行政机关内部救济机制的关系，从中总结出行政监察专员制度的独特品质及其无可替代的地位与功能。

With deep water and wide bay area,the east wing Dapeng Bay has the advantages of long coastline and enough anchorage.

认为西片大鹏湾虽是水深港阔，具有深水岸线长和锚地充足的优势，但风浪较大，港区陆域狭窄，位置偏离珠江河网区；而西片伶仃洋东岸，地处矾石水道及东部浅滩区，是伶仃洋淤积量最小的区域，沿岸潮滩和陆域宽广，建港用地充足，而且湾口有众多岛屿和浅滩屏障，风浪小，尤其是位于河海结合部，具有&水转水&的集疏运优势，总体自然条件西片优于东片。

AFt was extracted from cement paste containing sulphur - fixed ash using glycol and methanol (mixing ratio =1:3) as solvent, and its content was measured by back titration method.

选用1：3乙二醇-甲醇溶剂以相当高的选择性从掺固硫渣的水泥水化浆体中萃取钙矾石并采用返滴定法测定其含量。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。