标上

Catalytic oxidation process of low concentration phosphine with mixed solution of cobalt and Cuprum as catalyst is studied.

研究了以Co(上标 2+)与Cu(上标 2+)不同配比混合液为催化剂对低浓度PH3液相催化氧化净化的过程。

While (superscript 4) He is the decay product of uranium and thorium, mainly concentrated in the continental crust, and is approximately proportional to the heat flux of crust.

由於铀、钍元素在大陆地壳中富集，(上标 4) He通量与地壳热流呈正相关关系；同时(上标 3) He通量与地幔热流之间呈正相关。

The total iron in iron ore was titrated by potassium permanganate standard solution with sodium diphenylamine sulfonate as indicator.

用HNO3-HF处理，硫-磷混酸溶解试样，在盐酸介质中，用二氯化锡－三氯化钛将Fe(上标 3+)还原为Fe(上标 2+)，以二苯胺磺酸钠为指示剂，以高锰酸钾标准溶液滴定铁矿石中的全铁量。

A dual cell system was used to study the relationship between time and electric quantity, dissolved Cu(superscript 2+), Fe(superscript 2+) and Mn(superscript 2+) ratio in the process of electro-generative simultaneous leaching and bio-electro-generative simultaneous leaching.

采用双电池体系研究发电浸出过程和生物发电浸出过程中放电量、Fe(上标 2+)和Mn(上标 2+)浸出率与时间的关系。

The results showed that when the concentration of Pb(superscript 2+) was lower than 400 mg/L, effect on the germination root length, bud length, root weight, bud weight, the root activity and the proline content of the garden balsam were not obvious.

结果表明，当Pb(上标 2+)浓度低于400mg/L时，对凤仙花种子的发芽率、发芽势、幼苗的根长、芽长、根重、芽重、根系活力及脯氨酸含量影响不大，当Pb(上标 2+)浓度为800mg/L时，对凤仙花种子才开始表现出明显的抑制作用。

Results In 1344 isolates, Gram-positive and Gram-negative strains accounted for 31.92% and 68.08%, respectively.

1344株菌中，革兰氏阳性G(上标+菌占31.92%；革兰氏阴性G(上标-菌占68.08%。

Nicotianamine synthase gene has an important function in the Fe-deficiency response of graminaceous monocots, and it catalyzes substance to nicotianamine which plays an important carrier in the internal transport of Fe(superscript 2+) and other divalent metal ions. Nicotianamine can bind with Fe(superscript 2+) to form Fe(superscript 2+)-NA complex and protect plants from toxicity in acidic soil.

烟酰胺合成酶基因在单子叶禾本科的缺铁胁迫应答反应中起着关键作用，它的催化产物烟酰胺是铁及其他二价金属离子在体内吸收和转运的重要载体，且能与Fe(上标 2+)结合形成Fe(上标 2+)-NA复合物，从而使植物在酸性土壤中免受铁毒害。

The result of acute toxicity of Cd(superscript 2+) on antioxidant enzymes showed that along with the rise of concentration of Cd(superscript 2+), the activity of superoxide dismutase, catalase, and guaiacol peroxidase were changed in O.chinensis injected with Cd(superscript 2+).

对Cd(上标 2+)急性染毒的中华稻蝗抗氧化酶活性变化研究表明，随着Cd(上标 2+)浓度的升高，超氧化物歧化酶、过氧化氢酶、谷胱甘肽过氧化物酶活性均发生改变。

Effect of Ca(superscript 2+) on the structural and electrocatalytic properties of horseradish peroxidase isoenzyme C was investigated.

通过比较辣根过氧化物酶同工酶C中Ca(上标 2+)移除前后的HRPC的光谱和电化学特性，阐明了Ca(上标 2+)的存在对HRPC的重要作用。

Therefore appropriate amount of Ca(superscript 2+) or 504 (superscript 2-) can improve chemical imbibition and recovery factor of core.

添加适量的Ca(上标 2+)或SO4(上标 2-)，可以促进岩心的化学渗吸，从而提高岩心渗吸采收率。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。