Biochar is a type of charcoal produced by heating crop wastes, wood or other biomass in a simple kiln designed to limit the presence of oxygen.
生物炭是农作物废料、木材或其它生物质在简易窑(为限制氧存量而设计的窑)内经过加热而制成的一种炭。
In surveying potential candidates for "new Earths," astronomers look for traces of biological activity, such as the presence of oxygen.
在可能成为“新地球”的调查对象中，天文学家搜寻生物活动的迹象，例如检查是不是有氧气。
We investigated the influence (effect, impact) of temperature on the specific growth rat of yeast in the presence or absence of oxygen.
在有、无氧气存在的情况下，我们测定了培养温度对酵母比生长速率的影响。
In 1838, English scientist Robert Grove showed how electrolysis could be worked in reverse, and how hydrogen and oxygen react together in the presence of a catalyst to produce electricity.
在1838年，英国科学家RobertGrove证明了电解可以被反向进行，他的实验向大家展示了在有催化剂的情况下如何用氢气和氧气反应来产生电能。
Hydraulic oils must be stable in the presence of oxygen otherwise you will find deposits forming in the oil that will affect the performance of your system's pumps and valves.
液压油在有氧存在的情况下应该保持性能稳定，否则，油品氧化形成的油泥、漆膜、有机酸将会影响液压系统的泵和阀的运行。
Materials easily ignited in air not only become more susceptible to ignition, but also burn with added violence in the presence of oxygen.
在空气中容易点燃的材料(在富氧空气中)不仅变得更容易点燃而且燃烧得更加剧烈。
The singlet oxygen production was decreased and superoxide anion radical production was initiated in the presence of reducing agents.
还原剂的存在降低了单重态氧的生成并引起了超氧负离子自由基的生成。
As I understand it, polyester resin cannot fully cure in the presence of air (oxygen?).
据我的理解，聚酯树脂在空气中(氧气？)不能完全固化。
Anaerobic bacteria often do not require oxygen, can survive extremes in temperature, and can withstand the presence of toxins and heavy metals.
嫌气的细菌经常不需要氧，能在温度方面经历极端之后幸存，并且能禁得住毒素和重金属的存在。
It will also combine with oxygen to form oxides of nitrogen and, when combined with hydrogen in the presence of catalysts, will form ammonia.
它还会同氧反应生成氮的氧化物，而且当在有催化剂存在时它会同氢反应生成氨。
In the fuel-cell, hydrogen and oxygen mix in the presence of catalyst to create electricity that drives engine of car and so on, and the water vapor is the only emission.
燃料电池中的氢和氧在催化剂作用下产生的电，能驱动汽车发动机等，排放的只有水蒸气。
Some astrobiologists assume that the presence of oxygen, carbon, and ozone in an atmosphere indicates that life exists on a planet's surface.
一些天体生物学家认为的氧，碳，和臭氧在大气中的存在表明该星球表面有生命存在。
Wine rapidly deteriorates in the presence of oxygen. Creating a vacuum above the wine dramatically reduces the oxygen levels in the bottle allowing the wine stay fresh for longer.
红酒及洋酒暴露在氧气环境下极易变质，在瓶内制造低氧低压的类真空环境可使酒保鲜较长时间。
Presence of oxygen turns the reaction from thermo-dynamically unfavorable to favorable. In addition, oxygen in the gas phase may lead to an increase in he-cane c…
此外气相氧可提高正己烷转化率，乙烯和丙烯产物选择性，氧的作用在于促进烷烃脱氢并引发碳-碳键断裂反应。
The new results negate that assumption - the mere presence of oxygen in an atmosphere is now not enough evidence to start looking for life.
新的研究结果否定了这个假设——大气中仅仅存在氧还不能成为搜寻生命的有力证据。
At the same time, due to active gases (such as oxygen), as well as the presence of air bubbles generated when the local condensation heat, resulting in electrochemical corrosion of metal surface.
同时，由于活泼气体(如氧气)的存在以及气泡凝结时产生的局部高温，导致金属表面发生电化学腐蚀。
In the presence of oxygen and metal ions, notably copper and iron, bleomycins form a pseudo-enzyme that induces DNA cleavage.
在氧和其他金属离子特别是铜和铁离子存在时，博来霉素形成拟酶诱导DNA断裂。
The sintering is conducted in an atmosphere containing nitrogen and in the presence of an oxygen getter.
烧结生坯，在含有氮气的气氛中并在吸氧剂的存在下进行所述烧结。
The graft copolymerization of natural rubber(NR) and polar monomer maleic anhydride (MAH)in the presence of oxygen has been studied in toluene solution.
采用溶液法，选用极性单体马来酸酐（MAH），在非隔氧条件下，以过氧化苯甲酰（ BPO）为引发剂对天然橡胶（NR）进行接枝改性。
In this thesis, the heterogeneous reactions of SO_2 with oxides, atmospheric particles and mixtures were studied in the presence of oxygen.
大气颗粒物与大气化学成分的多相反应这一课题属于前沿课题。
In this thesis, the heterogeneous reactions of SO_2 with oxides, atmospheric particles and mixtures were studied in the presence of oxygen.
大气颗粒物与大气化学成分的多相反应这一课题属于前沿课题。
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