查询词典 Zn

Zn/Cd〓-mediated carbonyl allylation and benzylation could smoothly proceed in distilled and tap water.

以纯水作为反应介质，以Zn／Cd〓作为反应促进剂，实现了羰基化合物的苄基化。

The extraction performance of Zn from HCl medium with a new kind of carboxylic extractant, ammonized sec-octylphenoxy acetic (CA12) and ammonization of the extractant have been studied.

研究了一种新型萃取剂仲辛基苯氧乙酸(CA12)的皂化以及从盐酸介质中萃取Zn的性能。

The variation of Ca, Mg, Fe, Mn, Zn and Cu content in the fruit of Amygdalus communis L.

以普通扁桃品种纸皮为试材，研究了幼果生长发育期间Ca、Fe、Mg、Zn、Mn、Cu元素的含量变化。

The variograni of No.100 ore-body in three directions have been calculated, and the variogram curves were formulated. All these curves are leap type. The mathematical models of grade variability of Sn. Pb.. Zn.. Sb and Ag have been established respectively, the structural analysis of No.100 ore-body indicates the ore-body varies band anisotropically.

计算并拟合了100号矿体三个方向的变异函数，各变异函数曲线均为跃迁型，分别建立了Sn、Pb、Zn、Sb、Ag五元素的品位变化的数学模型，结构分析表明100号矿体呈带状各向异性变化。

Although the range of all metals studied in water samples did not exceed the National Water Quality Standard for Fisheries (GB 11607－89), relatively obvious contamination of Pb, and in particular Zn and As were found by the range in the samples of sediments and Anodonta woodiana.

虽然水样中各重金属均未超过国家渔业水质标准（GB1160789），但底泥和背角无齿蚌的结果显示出Pb，特别是Zn、As的污染比较明显。

The coordination chemistry of Cu(superscript 2+) and Zn(superscript 2+) in the melanin from testae of Prunus armeniaca var. ansu was investigated to lay a foundation for utilization of the melanin and other phytomelanins.

研究山杏种皮黑色素与Cu(上标 2+)和Zn(上标 2+)络合的相关性质，为山杏种皮黑色素以及其他植物黑色素的开发利用提供依据。

Activity of antioxidase can be increased by supplement of Zn MT, thereby improving the power of anti stress.

补充外源性Zn MT可提高应激机体的抗氧化物酶活性，从而提高机体的抗应激能力。

Three-dimensional finite element analysis of antiseismic capability of Fe/Zn composite.

首次结合通用有限元软件ANSYS，对Fe/Zn复合材料在地震波作用下进行了三维有限元分析，为新材料的制备提供理论依据。

The contents of Mn, Cu, Fe, Zn in the leave, flower, seed of Impatiens balsamina induced by space flight are determined by flame atomic absorption spectrometry. The measure parameters for FAAS are optimized.

采用火焰原子吸收分光光度法测定了航天诱变凤仙花的茎、叶、花、种子中Mn、Cu、Fe、Zn四种微量元素的含量，优化了原子吸收分光光度法测定参数。

To investigate the distribution of heavy metals and nutrient elements in plants along Quanzhou Bay, the distribution characteristics of Cu, Zn, Pb and N, P, K in Aegiceras corniculatum, Phragmites australis, Alternanthera philoxeroides, Basella rubra, Alternanthera sessilis, Solanum nigrum, Limonium sinense and Chenopodium albumas well as related soils were analyzed.

为了解泉州湾海岸带植物重金属及营养元素分布情况，研究了泉州湾海岸带常见植物桐花树、芦苇、空心莲子草、落葵、中华补血草、藜、莲子草、龙葵等的根、茎、叶等器官及其栖息土壤中的Cu、Zn、Pb及N、P、K含量分布特点。

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。