查询词典 O2

This sequence,which involves both photosystems,is termed noncyclic electron flow.

当被光激发时，一对电子被激活并离开光系统Ⅱ，由H2O所光解产生的电子所替代，2H2O→O2+4H++4e-。

Oxygen was found to depress their fcc-sctransition temperature Tc from the normal value of 260K,as indicated by theminimum in the temperature-dependent permittivity ε′,and also enlarge the drop in ε′at the transition.The magnitudes of the downward shift in Tc and the drop in ε′were roughly proportional to the O2 occupance at octahedral lattice sites,as estimatedfrom the resonance heights distribution.

发现氧的存在降低了以介电常数ε'温度谱极小值为标志的有序无序相变温Tc(正常相变温度为260K)，并且增大了ε'在相变前后的变化幅度，Tc的下降值和ε'的变化量Δε'近似比例于八面体位置氧的占据率，氧的占据率可以从核磁共振峰高的分布获得。

Int hisp aper, thes cavenginge ffectso fl otus germe xtractiono ns uperoxidea niona ndh ydroxylf reer adicalw ere studied with orthogonal test.

本文采用正交实验的方法对不同提取条件下莲子心水提取液和乙醇提取液清除O2·和·OH的能力进行了研究。

IF you overcook the vegetable for long time,the vegetable will be peste

我们的讨论陷入了僵局。o2。要是你把蔬菜煮得太久，菜就糊了。

The total energies,ionization potentials and electron affinities of two geometric structures of O_4 are given.Compared with the calculated results of oxy...

与氧原子、普通氧分子O2和臭氧分子O3的计算结果比较，显示O4分子可以以正方形结构或正四面体结构形式存在，其中正方形结构更有可能是O4分子的真实空间结构。

The efficiency of enriched oxygen aeration is much higher than that in conventional oxygenic aeration, and there is an optimal aeration rate.

强化O2在废水处理中的溶解度及总传质系数是提高好氧生物处理技术效能的重要课题之一。

Within the operating range in this study, the oxygen transfer coefficient using enriched oxygen aeration is 1.3 times higher than that in conventional oxygenic aeration.

采用富氧膜法制备O2体积浓度为28.8%的富氧气作为曝气源，研究了富氧气在水中的传质特性，考察了富氧气曝气对有机物降解的效果，研究了污水浓度、曝气量等因素对生物反应器效能的影响。

By using paleosols, the history of ancient paleoclimate change might be reconstructed while variation of atmospheric pressure of oxygen and level of carbon dioxide concentration during preCambrian and postCambrian periods, as well as paleoecological, paleogeographic features and paleolandscape were rebuilt. However, several problems should be tackled, e.g.

形成于晚第三纪以前的古土壤可以重建全球范围的古气候变化历史，同时揭示前寒武纪时期古大气O2分压以及后寒武纪时期古大气CO2浓度水平的演化过程；古土壤具有空间和时间等多重信息，能反映流域或区域的古景观、古地貌、古水文特征。

These products include sodium percarbonate, percarbamide, 4Na 2SO 4·2H 2O 2·NaCl adduct, tertiary amine oxides, hydrazine hydrate, dihydroxy benzene, quaternary ammonium salt hydrogen peroxide and methylethyl ketone oxime.

介绍了近期国外过氧化氢在部分化学品合成中应用研究新进展，产品包括过碳酸钠、过碳酰胺、4Na2 SO4·2H2 O2 ·NaCl加合物、叔胺氧化物、水合肼、二羟基苯、季铵盐过氧化氢和甲乙酮肟。

The present findings suggest that membrane lipid peroxidation is due to the excessive accumulation of the O2-..

表明水分胁迫引起的膜伤害可能是由于活性氧的累积所造成的。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！