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mica
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  “mica”译为未确定词的双语例句
     The expression of NK cell receptors (NKG2D, NKG2A/B, KIR2DL1 and KIR2DS1) and MICA (the ligand of NKG2D) were measured by RT-PCR or by FACS.
     用RT PCR或FACS检测NK细胞受体 (NKG2D ,NKG2A B ,KIR2DL1,KIR2DS1)及NKG2D的识别配体MICA的表达。
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     (4)CL were associated with A5(OR=0.36,P<0.05,95%CI=0.86-0.15) and A5.1(OR=6.47,P<0.05,95%CI=31.50-1.33)in exon 5 of MICA gene.
     (4)氯氮平诱发白细胞减少与M ICA第5外显子的A5(OR=0.36,P<0.05,95%C I=0.86-0.15)和A5.1(OR=6.47,P<0.05,95%C I=31.50-1.33)相关联。
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     Investigation of MICA*008/A5.1 Allele in Hunan Han Nationality
     湖南汉族MICA~*008/A5.1等位基因的调查分析
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     Results MICA*008 allele frequency was lower in patients with chronic granulocytic leukemia than in the control group (22.2% vs 34.3%, χ~2=4.98, P<0.05).
     结果①CGL患者组MICA*008基因频率(22.2%)比对照组(34.3%)低(χ~2=4.98,P<0.05);
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     K_2O-MgO-MgF_2-SiO_2 system is closely related to the composition of mica glass-ceramics.
     K_2O-MgO-MgF_2-SiO_2系统与云母型微晶玻璃的化学组成密切相关。
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     The Study of The Mica Depolarizer
     云母退偏器研究
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     Study of Mica Deporizer
     云母退偏器研究
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  mica
The melt droplets with a height of 50-100 nm and a lateral size of 2-3 μm were obtained by melting the PEO ultra-thin films on a mica surface.
      
An optically variable pigment was produced by wet chemical method, where TiO2-coated mica with interference colors acted as the substrate materials.
      
Results showed that optically variable pigments can be prepared by coating Cr2O3 on the surface of the pretreated TiO2-coated mica.
      
There are 61 major peraluminous granitic bodies in Tibet (TPGs) along the south of the Bangong Co-Gêrzê-Amdo-Nujiang suture, whose lithology includes tourmaline granite, muscovite granite and two-mica granite.
      
By quick neutron mobilization method, an 40Ar-39Ar age of mica from the major ore vein is determined, yielding ore-forming ages of 144 Ma and 147 Ma.
      
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During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses of the...

During the smelting of an iron ore containing high fluoride content in a small blast furnace, the hearth refractories were severely corroded. This can be ascribed to the action of very fluid fluoride-containing slags.Moreover, the products of corrosion reactions also have low viscosity which easily flow away from the working face, and leave a new surface fresh for further attack.The stack lining with the same 45%-Al_2O_3 blast furnace brick was, however, in fairly good condition. The chemical analyses of the inner surface of the brick samples show a high percentage of alkali-,alkaline earth-and fluoride-ion contents. But as the amount of melt formed at the temperatures on these zones is comparatively little, that corrosion is not severe.Minerals identified at the stack lining surface consist of: fluorite, fluoro-biotite, kaliophilitenephelite, leucite, cuspidine and spinels etc. This is the first time that mica minerals have ever been identified in blast furnace linings. It is thought that the formation of fluoro-biotite has fixed a part of the F~-, K~+ or Ca~(2+)-ions, which would otherwise go into the melt. Thus its formation actually exerts some protective action against the corrosion of the stack lining.The higher temperatures prevailing in the bosh region in contrast to the stack caused the formation of a much larger amount of fluoride-containing melt, which is probably responsible for the remarkable degree of Corrosion on the bosh refractories.High temperature experiments carried out in the laboratory on the reactions betwccn CaF_2 and 45%-Al_2O_3 brick powder in closed graphite crucibles throw light to explain the process of corrosion of the furnace lining. Hexagonal anorthite was identified in all of these experimtnts, which has identical optical properties and X-ray diffraction patterns with those of hexagonal anorthite synthesized in our laboratory. It is also interesting to note that these hexagonal anorthites change over to normal triclinic modification under heat treatment at 1000℃ for a period of 24 hours.As a result of this and other previous studies in this laboratory, the appropriate selection of refractory materials for the lining of blast furnaces, smelting iron (?)e containing high fluoride content, is recommended.

在某地高氟含量铁矿石的冶炼过程中,炉缸粘土质高炉砖砖视遭到了极其严重的破坏作用。主要侵蚀介质是含氟炉渣,侵蚀产物容易从砖面流失,因而加速了耐火材料的溶解。在炉身部位发现的矿物是:氟化钙、含氟黑云母、钾和钠的铝矽酸盐、枪晶石及尖晶石等。虽然在砖面附着物中包含着相当数量的氟、硷金属及硷土金属的化合物,但是由于温度较低,只有少量熔体出现,砖衬的损毁情况,并不严重。在高炉砖衬中发现云母矿物,还是第一次。在炉身部位的温度条件下,含氟黑云母具有固定F~-,K~+成Ca~(+2)的能力,对砖机起了保护作用。由于炉腹部位的温度较高,较大量含氟熔体出现,侵蚀就相当显著了。 CaF_2—45%Al_2O_3高炉砖的化学反应实验,可以帮助了解高炉砖视的损毁过程。反应产物中发现有六方钙长石,与实验室合成的六方钙长石具有一致的光学性质和X—射线粉末衍射图型。经过1000℃,24小时热处理后,这种六方钙长石会转变成为三斜晶系变体。 根据两个高炉砖衬的化学-矿物学研究及实验室中辅助研究的结果,对于冶炼高氟含量矿石的高炉砖衬的选择提出了建议。

Clay particles of less than 1μ were separated from 18 selected soil samples, representing important types of red and yellow soils of southern China.Com- position of clay minerals was identified by X-ray defraction,differential ther- mal analysis,base exchange capacity and chemical constituents.Zonality of the weathering stage of the soil,as shown in Fig.I,is explained briefly as follows. Region(Ⅰ)Lateritic soils Representative clay minerals:Kaolinite-gibbsite-hematite.Soils of this type mainly distribute on...

Clay particles of less than 1μ were separated from 18 selected soil samples, representing important types of red and yellow soils of southern China.Com- position of clay minerals was identified by X-ray defraction,differential ther- mal analysis,base exchange capacity and chemical constituents.Zonality of the weathering stage of the soil,as shown in Fig.I,is explained briefly as follows. Region(Ⅰ)Lateritic soils Representative clay minerals:Kaolinite-gibbsite-hematite.Soils of this type mainly distribute on the rolling hills of northern Hainan island,Laichou peninsula and south-central Yunnan.Formation of lateritic soil seems confined to the highly weathered parent materials of basalt origin,which were formed possibly at tertial geological age.Present direction of soil development remains much controversy. The whole soil contains around 20% Fe_2O_3 as hematite.Clay portions (<1μ)of the soil possess base exchange capacity 5—5.5 m.e.per 100 grams and SiO_2/Al_2O_3 ratio 1.4—1.5. TiO_2 in form of ilmenite presents both in silt and clay fractions up to 4—6%. Region(Ⅱ)Red soils of tropic zone Representative clay minerals:Kaolinite-halloysite.Soils of this type form a narrow belt in the tropic zone,extending from southern Fukien to Kwangsi. They are derived from various parent materials,including granite,metamor- phic rocks,sand stones,shales and marine deposits.Clay minerals of kaolinite group are the characteristic weathering product of this soil type with minor portions of gibbsite,hematite,quartz,and illite. Clay fractions of this soft type possess base exchange capacity 10—15 m.e. per 100 grams and SiO_3/Al_2O_3 ratio 1.7—2.0. Region(Ⅲ)Red soils of subtropic zone Representative clay minerals:Kaolinite-quartz-Montmorillonite.Soils of this type distribute in the subtropic zone of south-cntral China,occurring on the low hills and terraces below 500—600 meters altitude.They are derived from granite,phyllite,sandstones,shales and red clay.The much higher ex- change capacity of clay fraction(20—25 m.e.per 100 grams),higher SiO_2/Al_O_3 ratio(2.0—2.3),together with the identified clay minerals characterize the less advanced weathering stage in comparison to the soils of tropic zone. In the silt fraction of this soil type much of orthoclass and mica remain undecomposed. Region(Ⅳ)Yellow soils on the mountainous region of southern China Representative clay minerals.Kaolinite-montmorillonite,Illitequartz and montmorillonite-quartz. On the higher mountains above 600—700 meters altitude of southern China, including both tropic and subtropic zones,yellow soils and partially red soils occur.Clay minerals of this soil type characterize a moderately weathering stage.Montmorillonite,illite,kaolinite and quartz are the major constituents, but variations of the composition of these minerals are determined by the primary minerals of their parent rocks. Clay fractions of this soil type possess base exchange capacity 24—34 m.e. per 100 grams,with higher content of active alumina up to 2.5—5.5 m.e.per 100 grams. Soils occurring on the depression area of red earth region usually appear yellowish.The diversity of soil color leads much controversies in soil classifi- cation.Present investigation indicates that the change from reddish coloration to yellowish in the depression area is induced by the hydration of hematite. Once a small portion of the anhydrous ferric oxide has been hydrated into geothite or limonite due to local variation of the moisture condition,while the main constituents of the clay minerals remain unchanged,the soil gives a dis- tinctive yellowish coating.The change is very sensitive.

1.用 X-光分析,差热分析,化学分析和代换量测定方法,综合鉴定了华南砖红壤性红壤,热带红壤,亚热带红壤和山地黄壤的粘土矿物组成,并绘制了华南土壤主要粘土矿物组成分区图。我们将华南土壤分为四个区,即砖红壤性红壤区,主要粘土矿物为高岭石,三水铝石,赤铁矿;热带红壤区,主要粘土矿物为高岭石,埃洛石;亚热带红壤区以高岭石,石英,濛脱石为主;山地黄壤区,以伊利石,濛脱石,石英,高岭石为主,其组合因母岩的不同而转移。2.我们对微域地形,如坡上、坡下;南坡、北坡和局部气候的影响,使土壤颜色发生了显著的变化的红色,黄色土壤进行了研究。结果证明,二者的化学性质、粘土矿物组成完全相同。在低洼地区和阳坡等湿润条件下赤铁矿部分水化成为针铁矿,因之使土壤颜色变黄。但这种黄色土壤与风化程度较浅的山地黄壤是有很大区别的。3.我们把由浅海沉积物母岩发育,过去称为砖红壤性红黄色土的土壤,划归红壤。因为我们研究结果证明,这类土壤的风化程度并不比红壤深些,它们的粘士矿物组成和化学性质与热带地区的红壤也很一致。砖红壤性土壤,仅仅局限于一定的母岩。4.在紫红色砂岩发育的山地黄壤中发现了一水软铝石的存在,对它的生成、转变尚待进一步研究。

Measurements of longitudinally magnetized ferrite slab phase shifters are presented. A piece of Mg-Mn ferrite slab is placed in contact with the waveguide walls, and the phase variations with the (1) applied dc field, (2) slab thickness, (3) slab position (4) operating frequency, (5) temperature of the slab, (6) width of the waveguide a, and (7) amount of dielectric loading, are measured. Results agree qualitatively with the perturbation theory. When a slab of 1.55 mm (thick) 8.10 mm (high) 71.50 mm (long) is...

Measurements of longitudinally magnetized ferrite slab phase shifters are presented. A piece of Mg-Mn ferrite slab is placed in contact with the waveguide walls, and the phase variations with the (1) applied dc field, (2) slab thickness, (3) slab position (4) operating frequency, (5) temperature of the slab, (6) width of the waveguide a, and (7) amount of dielectric loading, are measured. Results agree qualitatively with the perturbation theory. When a slab of 1.55 mm (thick) 8.10 mm (high) 71.50 mm (long) is placed in contact with the narrower wall, a phase shift of 0.8 degree per cm is obtained. If the ferrite is loaded with a piece of 2.55 mm thick mica (ε5), the phase shift increases to 4.2 degree per cm. Furthermore, if the width of the waveguide a is decreased from 23 mm to 17 mm, the phase shift is 5.6 degree per cm. Similar to the results obtained by T. D. Geiszler and R. H. Henschke, the performance of these phase shifters can be improved by proper selection of the amount of dielectric loading and by appropriate choice the thickness of the ferrite slab. Since the ferrite material is placed in contact with the waveguide wall, a large amount of heat is conducted away, thus greatly increasing its power handling ability.

本文叙述了三厘米纵场式片状铁氧体相移器的微扰理论和一些实验结果。实验所用的材料是Mg-Mn型鉄氧体。铁氧体两端加上介质头,以使阻抗匹配。我们测量了:(1)这一单片在波导中不同位置时,相移和磁化电流之间的关系;(2)当这单片紧靠波导窄壁或宽壁时,相移和单片厚度之阴的关系;(3)当单片靠窄壁时,相移和频率、温度及波导宽度a的关系;(4)当单片靠窄壁并加介质片时,相移和介厚片厚度之间的关系;(5)当单片靠窄壁,同时缩小波导宽度a和加介质片时,相移和磁化电流之间的关系。实验结果指出:一根长71.50毫米,高8.10毫米,厚1.55毫米,靠窄壁的鉄氧体片,在某一磁场下,相移为0.8度/厘米。加上厚为2.55毫米的云母片后,相移为4.2度/厘米,较不加时增加五倍多。如果再将波导宽度a缩小为17毫米,则相移为5.6度/厘米,较原先增加了七倍。铁氧体片靠壁后,插入损耗降低,散热能力提高,估计可以提高功率承受能力。

 
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