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A new catalytic spectrophotometry was established for the determination of trace silver based on the catalytic effect of Ag on the oxidational discoloration reaction of methyl violet with potassium persulfate in buffer medium of HAc-NaAc including phenothroline as activator.

在醋酸－醋酸钠缓冲介质中，有活化剂邻二氮菲存在时，Ag对过硫酸钾氧化甲基紫褪色反应有催化作用，建立了测定痕量银的新催化光度法。

A catalytic kinetic spectrophotometric method has been established for the determination of trace Mn, based on the catalytic action of Mnon the oxidation - reduction reaction between KIO4 and KI in the presence of 1, 10 -phenanthroline and in HAc-NaAc buffer solution.

本文研究了HAc－NaAc缓冲溶液中，在1，10—菲啰啉激活作用下，锰对KIO4－KI氧化还原反应的催化动力学条件，建立了催化动力学光度法测定痕量锰的方法。

A method is described for determination of trace arsenic in phosphatic compound fertilizer with the correlation coefficient r = 0.9978, and within the range of marking recovery rate 99.12%～107.10%.

介绍一种磷复肥中微量砷的测定方法将混酸消解处理后的试样，在盐酸介质中，采用氢化物原子吸收光谱法测定砷含量本方法相关系数r = 0.9978，加标回收率范围在99.12%～107.10

A novel poly(phthalazine ether sulfone ketone, PPESK) stir bar was prepared. The method for analyzing trace level nitroaromatic explosives in aqueous samples by stir bar sorptive extraction coupled to GC through thermal desorption was developed.

制备了以聚醚砜酮为萃取相的新型固态萃取搅拌棒，建立了一种固态萃取搅拌棒/热解吸器直接热解吸/气相色谱联用分析水样品中痕量爆炸物的新方法。

Trace Hg in aqueous solution was preconcentrated by on-line formation of mercury diethyldithiocarbamate complex and adsorption of the resulting neutral complex on the inner walls of a PTFE knotted reactor.

天然水样中痕量的Hg通过FI在线形成中性的汞-二乙基二氨基甲酸络合物并吸附在聚四氟乙烯管编制的KR的内壁上实现预富集。

Therefore, a separation and preconcentration step prior to the analysis of trace elements is essential.

因此，结合分离富集技术对试样进行适当的预处理往往是十分必要的。

Simulation results show that the proposed method has good performance in time delay predictation of networked control systems, and the plant output can trace desired output effectively.(2)By combining node buffer queuing management and adaptive predictive control, a novel approach on predictive control of NCS is proposed.

在本方法中，使用了直接辨识控制器参数的自适应预测控制算法，该算法不需要在线求解Diophantine方程，减少了计算时间，较好地保证了NCS的实时性；在此基础上，又进一步提出了一种改进型的自适应预测控制算法，不仅避免了在线求解Diophantine方程，并且也不需要进行矩阵求逆运算，使算法的实时性大大提高。

We find no trace in the texts of the relevant provisions of such a rebuttable presumption, however.

然而，我们在条文中没有找到对如此一个可辩解的假定进行描绘的相关规定。

The carrying capacity of water resources and water environment in Yellow River basin is faced with a huge challenge, such as vegetation destruction, water and soil erosion, riverbed run-up, watercourse shrinkage, water shortage, frequency breakage flow, severity pollution, water quality deterioration, trace to the source and sendiment, coast erosion and regradation.

植被破坏、水土流失，河床抬高、河道萎缩，水源匮乏、频繁断流，污染严重、水质下降，朔源淤积、海岸蚀退等表明黄河流域水资源与水环境的承载能力面临着极大的挑战。

A renewal of interest in Luther and his theology, the active evangelism of the Basel Mission and the Inner Mission Society of Denmark, the revivalistic activity of Norwegian Hans Nielsen Hauge (1771 - 1824), and the establishment of the Swedish Mission Covenant Church (1878) could all trace roots back to the pietism of an earlier day.

续期的兴趣，路德和他的神学，积极传福音的巴塞尔的使命和内在的社会使命，丹麦， revivalistic活动挪威汉斯尼尔森hauge （ 1771 -1 824），并成立了瑞典教会的使命公约（ 1 878年）都可以追查的根源返回到虔诚主义的较早天。

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％。