查询词典 oxygen-deficient

Now Angela Belcher of the Massachusetts Institute of Technology and her colleagues have succeeded in mimicking the first part of photosynthesis by using a genetically modified virus to help split water into hydrogen and oxygen.

现在麻省理工学院的安吉拉。贝尔切和她的同事们成功模拟出了光合作用的第一部分，他们使用一种基因改良的病毒来促进水分解为氢气和氧气。

While hydrogen obtained from water is the gas that would be used as a fuel, the splitting of oxygen from water is the more technically challenging "half-reaction" in the process, Belcher explains, so her team focused on this part.

这种方法使产生氧气的效率提高了4倍，研究人员希望能够找到同样的以生物学为基础的系统来完成这个反应的另一半过程——分离氢气。目前，从水中分离的氢被分成质子和电子。

This may imply a special benthal cementation and a normal, shallow marine environment may be an insufficient oxygen environment, in the Precambrian (about 100 Ma).

独特的产出特征表明了前寒武纪（约1 000 Ma左右）的正常高能浅海环境似乎还处于一种氧气不充分的环境。

The effect of dissociation on the photolysis should be mainly attributed to the formation of the negative oxygen ions,which led to the changes of the activities of benzene ring and substituent groups.

解离对酚类物质降解规律的影响主要是通过氧负离子的形成，改变苯环以及其他取代基团的活性而造成的。

A kinetic study on the photopolymerization of MMA with benzophenone/triethylamine/mer-captan system as initiator has been carried out in the presence of oxygen.

采用二笨甲酮/三乙胺/硫醇体系作为引发剂，在含氧条件下进行了MMA光聚合反应的动力学研究。

Effects of reaction temperature, oxygen concentration, catalyst dosage and reaction time on oxidation of benzyl alcohol were investigated.

考察了反应温度、氧浓度、催化剂用量以及反应时间对苯甲醇氧化的影响。

Oxygen seems to be in charge of more e-Y 36 H2O = 3 mole%; time = 8 hours, more substituted benzyl carbon lead to the main products.

氧的电荷似乎位于更多电子 Y36H2O=3摩尔%；时间= 8小时，更多的被取代的苄基碳导致主要产品。

The high nitrogen content of Bessemer steel is a disadvantage for certain cold forming applications and continental works have, in recent years, developed modified processes in which oxygen replaces air.

氮含量高的贝塞麦钢是一个不利的某些冷成型应用和大陆架的作品，近年来，发达国家修改过程中，氧气代替空气。

The basic oxygen steel-making process is another important technical revolution following the Bessemer process and the Thomas process.

碱性氧气轉炉炼鋼法是继貝士麦炼鋼法和托馬斯炼鋼法之后又一次重要的技术革命，已經在若干国家如西欧国家、日本等炼鋼工业中起着巨大的作用。

Simulation studies of the dissolved oxygen control in wastewater treatment and pH control in a reactor show that the algorithms given in the thesis have good performance, and the algorithms are simple and easy to use and need fewer measured parameters in comparison with Goodwin's method of bilinear system adaptive control.

将本文的双线性系统自适应控制方法，用于废水处理中的溶氧过程控制和pH值控制的实例仿真研究表明，本文算法具有良好的动态性能，和Goodwin所采用的双线性自适应控制方案相比，具有所需的测量参数少、简单、易于实现等优点。

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。