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Test of electrochemical methods Benzylidene acetone, formaldehyde, compound additive D, ammonium metavanadate solution of acid sulfate tin polarization curves, test ammonium metavanadate on the open circuit potential acid sulfate solution of tin.

用电化学工作站测试分析苄叉丙酮、甲醛、复合添加剂D、偏钒酸铵对酸性硫酸盐镀锡溶液的极化曲线的影响，测试偏钒酸铵对酸性硫酸盐镀锡溶液开路电位的影响。

Benzylidene acetone desorption potential acid sulfate tin plating solution is very close to the ideal desorption potential; Benzylidene acetone, formaldehyde can regulate the desorption potential role and can increase the current density range; Composite additive D can make acid sulfate tin plating solution in the hydrogen produced during the rapid detachment; Ammonium metavanadate can catalyze Sn4+ and restore to Sn2+, and then make solution stability.

苄叉丙酮的脱附电位很接近酸性硫酸盐镀锡溶液的理想脱附电位；甲醛具有调节苄叉丙酮脱附电位的作用，并且能够增大电流密度范围；复合添加剂D能够使酸性硫酸盐镀锡溶液在电镀过程中产生的氢气迅速脱离；偏钒酸铵能够催化Sn4+还原为Sn2+，从而使镀液稳定。

Bipyridyl and 1,10-phenanthroline (L3), Cl3SnCH2CH2COORo L (L= L1, a; L2, b; L3, c), formed by low-heating solid-state reaction. The crystal structures of 1 and 2 show that the tin atom adopts a distorted trigonal bipyramid geometry via intramolecular carbonyl oxygen to tin coordination [the distances of Sn-0 bond are 0.2351(6) ran for 1 and 0.2362(3) nm for 2]. Compound 1 belongs to monoclinic with space group P2/c, a = 0.9842(2) nm, b =1. 0923(8) nm, c = 1.23948(11) nm,/?= 93.894(15)°, V= 1.3294(4) ran3, Mr = 366.23, 7 = 4. Compound2 belongs to monoclinic with space group P2{/c, a = 1.04443(9) nm, b = 1.04823(7) nm, c = 1.28113(9) nm,/= 90. 953(8)°, V= 1.40239(19) nm3, Mr = 380.25, Z = 4

利用元素分析、红外光谱、核磁共振对其结构进行了表征，并通过X射线单晶衍射测定了1和2的晶体结构，二者均为具有分子内羰基氧原子配位的畸变三角双锥结构。1属于单斜品系，空间群P21/c， a=0.9842(2)nm，b=1.0923(8)nm，c=1.23948(11)nm，β=93.894(15)°，V=1.3294(4) nm^3，Mr=366.23，Z=4.2属于单斜晶系，空间群P21/c，a=1.04443(9)nm，b=1.04823 (7)nm，c=1.28113(9)nm，β=90.953(8)°，V=1.40239(19)nm^3，Mr=380.25，Z=4。

The result is that both tin atoms are five-coordination, have a distorted trigonal bipyramidal geometry with an additional week interaction between another oxygen atom and tin atom.

分子中四个羧酸酯基有桥联双齿和单齿两种不同的配位模式；在内环锡和外环锡的配位单元中，锡均形成具有五配位的畸变三角双锥配位构型，同时另有一氧原子与中心锡原子之间有弱相互作用。

Cassiterite has been an important tin ore for eons and is still the greatest source of tin today.

锡石作为一种重要的锡矿石已有数十亿年的历史，时至今日仍然是锡的重要来源。

The making of tin (the technical English word for tin is Cassiterite which is said to have been derived from the Sanskrit term Kasthira ).

锡的制造（锡这个单词在英语里的技术语言是 Cassiterite ，据说是源自印度梵语单词 Kasthira 。

The Táin from the Irish Epic Táin Bó Cuailnge .

爱尔兰史诗〈泰恩·博·库利〉中的〈泰恩〉》。

At the same time, when we generate TIN, we must project the spatial points to the plane and every point can't overlap each other. So we also must generate TIN dividually then merge them into the whole skull's DSM.

同时由于在构建三角网的时候，需要将空间点投影到二维平面上进行构网，这就必须保证空间点投影到平面上的位置彼此是不重叠的，因而也需要将颅骨模型进行分块构网。

The precipitation only has faintish negative correlations with N concentrations （p〉 0.05）, but the NH^＋ 4-N has significant positive correlations with NO^- 3-N and TON （p〈 0.05）, and they might have homologue.

结果表明，各形态氮月均浓度之间差别较大，具有明显的季节性，原因主要与人类活动、降水强度及频次、风向、地理位置以及氮氧化物自然排放有关；湿沉降的TN组成以TIN为主（51.38％-98.96％），TIN又以NH^＋ 4-N和NO^- 3-N特别是NH^＋ 4-N为主，降水天气系统的路径在很大程度上影响着降水中各形态氮的组成；降水量与各形态氮浓度均呈较弱的负相关（P〉0.05），而NH^＋ 4-N与NO^- 3-N、TON均呈显著正相关（P〈0.05），它们可能具有同源性。

Arch had a successful example in the replacement of Tin chemical with our Omedine products in Marine coatings. Tin chemical is a great hazard to ocean halobios and will cause a vicious circle to marine environment.

例如，在海洋油漆中奥麒的Omadine杀菌剂，替代原有的含有害生态环境的有机锡的涂料，获得国际海事组织的推荐和业界的首肯。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。