质元素

Theoptimeter growthing environment of Anthurium andreanum seedlings wastested by the photosynthetic rate;The important factor of the soilless culture of Anthurium andreanum seedlings was decided by variance analysis of the total areas of leaves, height of seedling, the content of chlorophyll, photosynthetic rate;The best statistical level was defined by Duncans test;The optimum substrate and nutritional solution were determined by analysis of the major components; The requirements of macro- element at the different growth period have determined by the timing of flowering and measuring the content of N, P, K, Ca , Mg of leaves which can offer the theory of the soillessculture of Anthurium andreanum.

测定各处理组合的总叶面积、株高、叶绿素含量、光合速率等形态、生理指标，并对这些指标进行正交试验的方差分析来决定影响安祖花无土栽培的主要因素。通过对主要因素各水平进行新复极差检验得出最好的水平。综合考虑主要因素和水平找出最适合安祖花无土栽培的基质、营养液。观察各处理安祖花初花期的早晚，并通过测定不同时期叶片中的N、P、K、Ca、Mg的含量，确定安祖花不同生长时期对大量元素的需求情况，为今后更好的进行安祖花无土栽培提供理论依据。

Also,the differences between those in sandy habitat and those in non-sandy habitat are significant.2 There existed two common factors called macroelement factor and trace element factor,which indicate the contents of macroelements and trace elements in the plants respectively.

豆科与禾本科相比，豆科植物因其具固氮能力，所含大量元素水平较高，而禾本科植物因细胞壁硅质化，含微量元素稍高；沙质生境因其养分贫瘠，植物的大量与微量元素均较非沙质生境中的低；特别是本区地带性土壤-栗钙土与特异性生境沙带中的疏林沙土相比，疏林沙土上植物大量与微量元素含量较栗钙土区植物明显偏低。

"For his discovery, by means of his mass spectrograph, of isotopes, in a large number of non-radioactive elements, and for his enunciation of the whole-number rule"

1922年弗朗西斯·阿斯顿英国"使用质谱仪发现了大量非放射性元素的同位素，并且阐明了整数法则"

The load carrying capacity and antiwear property of S,P containing benzotriazole derivative (BM 3) were evaluated using a four ball test machine,and compared with those of zinc salt di(T 202 ) and amine salt of complex ester thiophosphate (T 307 ). The antiwear mechanism of BM 3 were studied by investigating the chemical states and the mass fraction of elements on the rubbed surfaces using X ray photoelectron spectroscopy and electron probe microanalysis and the thermal decomposition products using gas chromatography mass spectrograph.

在四球机上对照评价了含硫、磷苯并三氮唑衍生物（BM－3）和二丁辛基二硫代磷酸锌（T202）及硫磷酸复酯胺盐（T307）的承载能力和抗磨性能，用X射线光电子能谱仪和电子探针微分析仪等对磨斑表面元素N，S和P的存在形式及表面膜的组成进行了分析，用气相色谱－质谱联用仪对BM－3的热分解产物进行了分析，并且还对其极压抗磨作用机理作了探讨。

The title compounds were characterized by mass spectrum, 1H nuclear magnetic resonance and elementary analysis.

用元素分析、质谱和核磁共振氢谱对目标化合物进行了表征。

They were characterized by Elemental Analysis, IR,UV-Vis spectra and mass spectrum.

利用元素分析、红外光谱、UV/Vis 光谱、质谱对酞菁金属配合物进行了表征。

In his sketchbooks of collages, Meier works and reworks each page until the entire volume is filled.

在迈耶的作品里，以上这些元素发生质的变化，转变成为精巧的叶状或花瓣状的形态构成。

This effect of the mesenchyme on Ngn3 induction was mediated by cell-cell contacts and required a functional Notch pathway.

神经元素3对间充质的这种诱导效应是通过细胞间接触而起作用的，并需要有功能性的Notch信号通道存在。

Determination of industrial analysis, constant volume net calorific power, elementaryanalysis, plastometer indice, ash composition, grindablity, ash fusion point, ractivity,combustion and transportation performance of the 8 kinds of coal.

通过对8 种煤粉的工业分析、恒容低位发热量、元素分析、胶质层指数、灰分成分、可磨性、灰熔点、反应性、燃烧性能和输送性能的测定。

The mechanism of synthesizing methyl quinoxaline di-N-oxide has been put forward and the side reaction causes suggested.

讨论了合成条件，并且用红外光谱、元素分析、质谱和HNMR对40种目标化合物的结构进行了分析和表征。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。