英语释义

1. the velocity of a star's motion relative to the sun as determined from its proper motion, distance, and radial velocity — called also space motion

2. the number of volumes of gas or liquid usually calculated to standard conditions that pass over or through one unit volume (as of a catalyst in a reaction tube) in unit time

片语

weight space velocity重量空速

liquid space velocity液体空间速度

weight hourly space velocity重时空速

air speed[航] 空速

hourly space velocity时空速

liquid hourly space velocity液时空速

gas space velocity气体空速

high space velocity高空速

gaseous hourly space velocity气体体积空速

gas hourly space velocity气时空速

英汉例句

• the effect of space velocity on catalyst was studied as well as concentration and temperature.

  考察了空速、进料浓度、反应温度等因素对催化剂活性的影响。

• the effects of reaction temperature and space velocity on the cracking gas and liquid product yields and distribution of light fcc gasoline were investigated.

  考察了反应温度和空速对催化裂化轻汽油裂化反应气液相收率和产品分布的影响。

• the effects of the operating conditions such as reaction temperature, liquid space velocity and the mol ratio of hydrogen to diolefins were investigated.

  考察了反应温度、空速及氢气与双烯烃的摩尔比等工艺条件对加氢效果的影响。

• radial-flow reactor has widely used in petrochemical industry as it has advantages of low pressure drop, great space velocity and smaller-sized catalyst can be used in it.

  径向流反应器具有压降小、空速大、可使用较小颗粒催化剂等优点，已在石油化工行业广泛应用。

• the effects of reaction temperature, concentration , space velocity etc. on the activity and selectivity of the catalyst as well as its thermal stability were examined in fix bed reactor.

  在固定床上，考察了反应温度、浓度、空速等对催化剂活性和选择性的影响及催化剂的耐热稳定性。

• the catalyst alkylation performance was studied under different temperature, space velocity and pressure.

  在一定的温度、空速和压力的范围内，考察了催化剂的烷基化性能。

• to meet the need of catalytic reforming units revamping and ccr hydrofining process, high space velocity reforming feeds pretreatment technology was developed.

  为适应催化重整装置扩能改造及连续重整预加氢技术发展的需要，开发了高空速重整原料预加氢技术。

• the effects of temperature, the ratio of ammonia, the ratio of air and the space velocity of catalyst upon the conversion, molar yield and selectivity of the reaction were observed, respectively.

  考察了反应温度、氨比、空气比和空速对反应的转化率，摩尔收率和选择性的影响。

• the successful application of domestic catalyst 481 - 3 in the unit at high space velocity showed that the catalyst had good activity and suitability.

  国产催化剂481-3在高空速条件下应用并取得成功，表现出良好的活性及适应性。

• the results indicated that the low temperature, high pressure, and low space velocity are favorable to produce the long-chain hydrocarbons.

  结果表明：低温、高压、低空速有利于长链碳氢化合物的生成。

• the results showed that instability of operation temperature and increase in space velocity and pressure would cause deterioration of the activity stability, resulting in shorter service cycle.

  结果表明，操作温度的不平稳、空速及压力的提高均会造成催化剂活性稳定性变差，运转周期缩短。

• in a reactor with up flow slightly expanded bed and using middle east residue as the feedstock, the effects of temperature, space velocity on the removal percent of impurity were studied.

  在上流式微膨胀床反应器内，以中东渣油为原料，考察了温度、空速对杂质脱除率的影响。

• study results reveal that the catalyst temperature and space velocity are key factors for urea-scr system performance, and their importance varies as engine operation conditions;

  结果表明：催化剂温度和空速是影响尿素scr系统性能的主要因素，两者在不同的工况下重要程度不同；

• through experiments, the effects of acetic acid concentration, space velocity and copper wight on the reaction rate were also studied. this new technology has been used in industry.

  通过试验得到了醋酸浓度、鼓风量、铜屑量及液空速等条件对反应速度的影响，确定了工艺流程和反应条件，并进行了工业化生产。

• the influences of temperature, pressure, space velocity and ratio of hydrogen to nitrogen on the activity of ruthenium based ammonia synthesis catalyst were investigated.

  用氨合成催化剂性能评价装置，研究了反应温度、压力、空速和氢氮比对以活性炭为载体的钌基氨合成催化剂活性的影响。