| 1. | Hardness is caused by divalent metallic cations .
硬度是由一些两价金属阳离子引起的。
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| 2. | Ring - opening polymerization of - caprolactone catalyzed by the divalent - diketiminate ytterbium complexes
己内酯开环聚合
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| 3. | Based on the effect of divalent metal ions and chelator edta on the activity , the enzyme is metal - dependent only
该酶是金属依赖型d -海因酶。重组质粒ghd - yz26在e
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| 4. | In addition , divalent metal adduction provided improved positive mode ionization efficiency for these peptides
此外，二价金属加合提高了这些肽段的正离子模式离子化效率。
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| 5. | And ha molecules were synthesized in vitro utilizing excessive active udp - glca and udp - glcnac sugar nucleotide precursors in the presence of a divalent mg2 + or mn2 + ion
经转化大肠杆菌dh5a和iptg诱导表达，提取原生质膜在体外利用活性前驱物合成了透明质酸。以s
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| 6. | The chemical analysis of the soil extracted solution has shown that the soluble salt in the soil is predominated by the divalent ions ca2 + and mg2 + which mean that the soil aggregates have been chemically stable during the field experiment
同时，对土壤浸剂液的化学成分的分析结果表明，浸提液中二价的钙、镁离子占优势，这使土壤微团聚体处于一种化学稳定的状态。
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| 7. | Inhibition by zn2 + and mn2 + additive , and almost 100 % of t he activity was inhibited under their physiologically significant concentrations . these results suggest that the protease is possibly regulated by divalent cations in vivo
蛋白酶的活性受到某些二价金属阳离于的抑制，比如zn讣、 mg卜、 hg荧光发射光谱结果显示，在不同的抑制剂作用下，蛋白酶的高级构象可能发生了较大变化。
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| 8. | More recently , the perovskite manganite compounds , la1 - xsrxmno3 have been used as the cathode of the solid oxide fuel cell ( sofc ) because of their electro - ion conductivity properties . in manganite perovskites , substitution of divalent ions ( alkaline earth metals viz
近几年来， la _ ( 1 - x ) sr _ xmno _ 3这类钙钛矿型结构的氧化物材料因为其具有混合电子-离子导电特性而被广泛的应用于固体氧化物燃料电池阴极材料。
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| 9. | Though zn 2 + and co 2 + are divalent ions , they probably can not substitute ca2 + from the active center of tcs , or can substitute ca2 + but does not change the structure of tcs . there is no significant change observed for the fluorescence intensity of tcs
‘ “是二价金属离子，但这两种离子与天花粉蛋白作用时可能并没有取代天花粉蛋白活性部位的ca ‘ ” ，或部分取代但并没有改变天花粉蛋白分子的空间结构，以致天花粉蛋白的荧光强度无明显变化。
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| 10. | The rate of the coordination reaction between divalent metal ions and murexide in a water - in - oil microemulsion was determined by spectrophotometric technique to study the transport of the metal ions entrapped in the organogel formed by cationic surfactant cetyltrimethylammonium bromide
以微乳液中二价金属离子与紫脲酸胺之间的配位反应为指示反应，采用分光光度技术，研究了金属离子在由阳离子表面活性剂十六烷基三甲基溴化胺构建的微乳凝胶中的传质问题。
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