负离散,negative dispersion,在线英语词典,英文翻译,专业英语

1) negative dispersion

负离散

The practical calculation method of equivalent dispersion coefficient is developed and the phenomenon of negative dispersion is discussed.

对等效离散的机制进行了理论分析，通过水槽试验和对珠江典型河段的天然观测，说明潮流断面平均流速和平均浓度相对于潮平均值的波动是引起等效离散的主要原因，提出了计算等效离散系数的实用方法，并对负离散问题进行了讨论。

2) anions

负离子

The Influences of Anions on the Photoreduction and Electroredox Properties of Viologen Compounds;

负离子对紫精光还原和电氧化还原性能的影响

Unlike neutral C60,which is an electron-deficient molecule and reactive towards nucleophiles,C60 anions are electron-rich species and reactive towards electrophiles.

与之不同的是C60经还原生成负离子后,由缺电子变为富含电子,具有很强的亲核性质,可与亲电试剂进行反应。

Anionic functional finish and the finished fabrics used in home life will generate anions continuously,which neutralize the cations in the air,purify the air,promote the blood circulation,and yield the bactericidal,deodorant and far IR heat-storage effects.

负离子功能整理剂及用于家居的整理织物,会持续发生负离子,中和空气中正离子,起到净化空气、促进血液循环、抗菌除臭、远红外蓄热等作用。

3) Negative ions

负离子

Influence of electric field inhomogeneity to photodetachment of negative ions in external fields;

电场不均匀性对外场中负离子光剥离的影响(英文)

This paper introduces a new air negative ions producer with liquid electrodes.

介绍一种我们研制的新型液体电极式空气负离子发生器。

In order to raise the extracted current density of ions,negative ions are injected in the SPT from the cathode.

针对为了提高稳态等离子体推进器的推进功率,而从阴极注入少量负离子,采用流体力学方法,建立了包括负离子的一维等离子体无碰撞鞘层模型,讨论了SPT通道内一维稳态等离子体鞘层中负离子的影响。

4) Anion

负离子

tudy of Anionic Additive in Plastic Evolving;

负离子塑料的制备与研究

Characteristic Study of Polyacrylonitrile Spinning Solution Containing Nano-anion;

含纳米负离子的聚丙烯腈原液的特性研究

5) negative ion

负离子

Preparation and properties of negative ion PET fiber;

PET负离子纤维的制备及其性能研究

Preparation and application of negative ion PP fiber;

负离子丙纶的制备及应用

The methods of tourmaline compound modification and the mechanisms of negative ion forming were introduced,and the application of negative powder in interior wall coating and some instances of research on this aspect at home and abroad were briefly introduced.

阐述了电气石矿物的特性,电气石粉体的复合改性方法,负离子产生的机理。

6) negative ion

负离子素

The hybrid polypropylene bi-component fibres (BCF) which are prepared by embedding into them the negative ion superfine powders are used to manufacture the negative ion carpet through weaving and back-coating of negative ion paste.

采用共混法将负离子素超微粉体镶嵌于纤维之中,制成丙纶BCF丝,然后经织造、采用负离子浆进行背涂,生产负离子健康地毯。

参考词条

铁负离子负离子基 SO_2负离子正负离子负离子源负离子流 C2负离子负离子粉氢负离子负离差银负离子负离子谱负离子势液雾生存区 W0620

补充资料：离散时间周期序列的离散傅里叶级数表示

　　 (1)
　　式中χ((n))_N为一离散时间周期序列，其周期为N点，即
　　式中r为任意整数。X((k))_N为频域周期序列，其周期亦为N点，即X(k)=X(k+lN)，式中l为任意整数。
　　
　　从式(1)可导出已知X((k))_N求χ((n))_N的关系
　　　(2)
　　式(1)和式(2)称为离散傅里叶级数对。
　　
　　当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))_N，如果χ((n))_N的离散傅里叶级数(DFS)表示为,则χ((n+m))_N的DFS表示为
　　

说明：补充资料仅用于学习参考，请勿用于其它任何用途。

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1) negative dispersion 负离散 1. The practical calculation method of equivalent dispersion coefficient is developed and the phenomenon of negative dispersion is discussed. 对等效离散的机制进行了理论分析，通过水槽试验和对珠江典型河段的天然观测，说明潮流断面平均流速和平均浓度相对于潮平均值的波动是引起等效离散的主要原因，提出了计算等效离散系数的实用方法，并对负离散问题进行了讨论。 2) anions 负离子 1. The Influences of Anions on the Photoreduction and Electroredox Properties of Viologen Compounds; 负离子对紫精光还原和电氧化还原性能的影响 2. Unlike neutral C60,which is an electron-deficient molecule and reactive towards nucleophiles,C60 anions are electron-rich species and reactive towards electrophiles. 与之不同的是C60经还原生成负离子后,由缺电子变为富含电子,具有很强的亲核性质,可与亲电试剂进行反应。 3. Anionic functional finish and the finished fabrics used in home life will generate anions continuously,which neutralize the cations in the air,purify the air,promote the blood circulation,and yield the bactericidal,deodorant and far IR heat-storage effects. 负离子功能整理剂及用于家居的整理织物,会持续发生负离子,中和空气中正离子,起到净化空气、促进血液循环、抗菌除臭、远红外蓄热等作用。 3) Negative ions 负离子 1. Influence of electric field inhomogeneity to photodetachment of negative ions in external fields; 电场不均匀性对外场中负离子光剥离的影响(英文) 2. This paper introduces a new air negative ions producer with liquid electrodes. 介绍一种我们研制的新型液体电极式空气负离子发生器。 3. In order to raise the extracted current density of ions,negative ions are injected in the SPT from the cathode. 针对为了提高稳态等离子体推进器的推进功率,而从阴极注入少量负离子,采用流体力学方法,建立了包括负离子的一维等离子体无碰撞鞘层模型,讨论了SPT通道内一维稳态等离子体鞘层中负离子的影响。 4) Anion 负离子 1. tudy of Anionic Additive in Plastic Evolving; 负离子塑料的制备与研究 2. Characteristic Study of Polyacrylonitrile Spinning Solution Containing Nano-anion; 含纳米负离子的聚丙烯腈原液的特性研究 5) negative ion 负离子 1. Preparation and properties of negative ion PET fiber; PET负离子纤维的制备及其性能研究 2. Preparation and application of negative ion PP fiber; 负离子丙纶的制备及应用 3. The methods of tourmaline compound modification and the mechanisms of negative ion forming were introduced,and the application of negative powder in interior wall coating and some instances of research on this aspect at home and abroad were briefly introduced. 阐述了电气石矿物的特性,电气石粉体的复合改性方法,负离子产生的机理。 6) negative ion 负离子素 1. The hybrid polypropylene bi-component fibres (BCF) which are prepared by embedding into them the negative ion superfine powders are used to manufacture the negative ion carpet through weaving and back-coating of negative ion paste. 采用共混法将负离子素超微粉体镶嵌于纤维之中,制成丙纶BCF丝,然后经织造、采用负离子浆进行背涂,生产负离子健康地毯。参考词条铁负离子负离子基 SO_2负离子正负离子负离子源负离子流 C2负离子负离子粉氢负离子负离差银负离子负离子谱负离子势液雾生存区 W0620 补充资料：离散时间周期序列的离散傅里叶级数表示　　 (1) 　　式中χ((n))_N为一离散时间周期序列，其周期为N点，即　　式中r为任意整数。X((k))_N为频域周期序列，其周期亦为N点，即X(k)=X(k+lN)，式中l为任意整数。　　　　从式(1)可导出已知X((k))_N求χ((n))_N的关系　　　(2) 　　式(1)和式(2)称为离散傅里叶级数对。　　　　当离散时间周期序列整体向左移位m时,移位后的序列为χ((n+m))_N，如果χ((n))_N的离散傅里叶级数(DFS)表示为,则χ((n+m))_N的DFS表示为　　说明：补充资料仅用于学习参考，请勿用于其它任何用途。
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