查询词典 Zn

Cu and Zn are the main heavy metals in municipal sludges.

Cu、Zn是我国城市污泥中最主要的重金属元素。

The results shawed that DBH was positively correlated with nutrient contents of N, P, K, Ca, Fe, Cu and Zn, while negatively correlated with foliar N:P ratio.

通过对所得数据进行相关分析得出，胸径和树高均与叶片的N、P、K、Ca、Fe、Cu和Zn含量呈正相关，与叶片N：P比值呈负相关。

Only very few of the quaternary metal selenides KxMyMy(Sez M(=Zn,Cd,Hg have been reported except K2Hg3Sn2Se, K2Hg3Ge2Se8, K6ZnSn5Se17 ect.

据文献报道，已经合成的KxMyMy(Sez M(=Zn，Cd，Hg体系的化合物很少，例如：K2Hg3Sn2Se8，K2Hg3Ge2Se8，K6ZnSn5Se17等。

Three types of humic acids, i.e. peat, lignite and weathering coal (named as C-HA, H-HA and F-HA, respectively), were extracted and stability constants of Mn(superscript 2+) and Zn(superscript 2+) with the three humic acids were investigated.

以分别来源于草碳、褐煤和风化煤的腐殖酸为供试材料，采用离子交换平衡法研究了不同腐殖化程度的腐殖酸与Mn(上标 2+)和Zn(上标 2+)的络合稳定常数，并探讨了环境pH值对络合稳定常数的影响。

According to these resales,an enrichment model of Al-Zn-In anode surface was proposed.

根据以上结果，提出了 Al-Zn-In 牺牲阳极在3％NaCl 溶液中放电后表面组成的物理模型。

A series of Bi-Zn composite oxide catalysts were prepared by coprecipitation and used for the synthesis of phenyl isocyanate by catalytic decomposition of methyl N-phenyl carbamate.

采用共沉淀法制备了一系列Bi-Zn复合氧化物催化剂并将其用于催化苯氨基甲酸甲酯分解制备苯基异氰酸酯。

The influence of minor Bi additions on the interfacial morphology between Sn-Zn-xBi (x=0, 1, 3) solders and a Cu layer after reflowing were investigated by microstructural observations.

本文通过微观组织观察系统地研究了微量Bi组元的添加对Sn-Zn-xBi(x=0， 1， 3)系焊料合金与Cu基板间回流焊接界面形貌的影响。

For the aged aluminum alloys which generally contain disc/plate-shaped or rod/needle-shaped precipitates, a model has been established, from the viewpoints of thermodynamics, kinetics and strengthening theory, to relate quantitatively the yield strength to the size, volume fraction and aspect ratio of precipitates which all were analytical associated with the chemical compositions of alloys, aging temperature and aging time. This model has been experimentally proved to well predict the variation of yield strength with the evolution of disc/plate-shaped or rod/needle-shaped precipitates for present Al-4. 62wt% Cu-0.65wt% Mg alloy aged at 513K and Al-1. 12wt% Mg0.57wt% Si alloy aged at 463K, respectively, and the yield strengths simulated by this model were also found to be in well agreement with previously measured values for a series of aged Al-Cu binary alloys, AA6061 and Al-Zn-Mg alloys.

以析出热力学、长大动力学及强化理论为基础，研究了含有盘/片状、棒/针状时效析出强化相铝合金在时效过程中时效析出相尺寸、体积分数和长径比等参数的演变及其对合金时效强化效果的影响，给出了合金成分、时效变量与微观组织参数之间非线性的解析表达关系式，进而从微观结构—宏观性能相结合的角度出发建立起了具有盘/片状、棒/针状时效析出相铝合金的时效工艺—屈服强度量化模型，并将该模型应用于不同温度、连续不同时间时效下Al-Cu二元系列合金、6061铝合金和Al-Zn-Mg系列合金的屈服强度预测，得到了与前人实测值吻合良好的结果。

Effects of calcium magnesium phosphate and silicon fertilizer (Na 2SiO 3) on the growth and the uptake of Cd, Pb, Zn, Cu, Mn, Fe, N, P and K by pakchoi were studied through pot experiment with cadmium, lead, and zinc contaminated soil.

采用盆栽方法研究在 Cd、Pb、Zn污染的酸性土壤上，钙镁磷肥和硅肥对小白菜生长及污染元素和养分元素(N、P、K、Mn、Fe、Cu)吸收的影响。

Up to date, transition metal phosphites have been extensively studied, the compoundsof V, Fe, Co, Mn, Zn and Cr with their various properties havebeen reported.

迄今为止，过渡金属亚磷酸盐化合物得到了较为深入的研究，一系列 V， Fe， Co， Mn， Zn和 Cr的亚磷酸盐化合物被合成出来，并且一些关于这类化合物的性质也有了相关的报导。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。