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a combined effect
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  “a combined effect”译为未确定词的双语例句
     The variation of δ 18O in river water is a combined effect of δ 18O in river water, precipitation amount and surface evaporation.
     河水中δ18O的变化幅度远小于降水 ,它是降水中δ18O、降水量以及地表蒸发过程共同作用的结果。
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     In 0.5 mol/L H2SO4+Fe2(SO4)3 solution a combined effect of magnetic field on Fe3+ reduction and H+ depolarization reaction was observed.
     在H2SO4+Fe2(SO4)3溶液中磁场对铁阴极过程的加速作用是磁场对Fe(3+)还原和对氢离子去极化反应作用的综合结果。
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     Conclusion Although Fok Ⅰ polymorphisms of VDR gene were not significantly associated with BMD in postmenopausal women, VDR gene Fok Ⅰ and 3′ region polymorphisms(Apa Ⅰ and Taq Ⅰ) had a combined effect on the BMD in postmenopausal women.
     结论  VDR基因 Fok 多态性虽然与绝经后妇女 BMD值无关联 ,但 Fok 多态性和 3′端多态性 (Apa 和 Taq )对绝经后妇女 BMD值的影响具有协同作用
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     Conclusion Chemically synthesized specific siRNA targeting ST6Gal I effectively inhibits SW480 cell ST6Gal I expression and leads to diminished cell adhesion and invasiveness to ECM, suggesting a combined effect of siRNA and ASO with different targeting sites.
     结论化学合成的靶向ST6GalI的siRNA能够下调SW480细胞中ST6GalI基因的表达,继而降低细胞对ECM的粘附和侵袭力,并且与不同靶点的ASO联合应用具有相加和协同效应。
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     A combined effect of polymorphism of CYP1A1 MspI and serum selenium level on the risk of lung cancer was suggested.
     CYP1A1基因多态性与血清硒水平联合作用时明显提高肺癌发生的危险性 ,在肺癌发生中存在协同作用。
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     A significant combined effect was also observed.
     并且低剂量γ-射线与香烟烟雾水溶物还有极显著的协同效应。
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     A. Effect values of G. C.
     亲本榆5A、1729A、3197A、7501A和7502A的一般配合力效应值较低;
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     There is a good effect.
     研究结论指导生产,取得了预期的效果。
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     A Combined Radiator
     装配式散热器
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     Effect of huperzine A combined with ginaton on Alzheimer's disease
     哈伯因联合金纳多治疗阿尔茨海默病的疗效观察
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  a combined effect
In particular, the increase between 475 and 650 km is ascribed to a combined effect of temperature and pressure variation with depth with related phase changes and possible changes in composition.
      
The constancy of the average misorientations is a combined effect of the variation of the fractions of GNBs and incidental dislocation boundaries (IDBs) and the variation of the average misorientations of GNBs and IDBs.
      
The constancy of the average misorientations is a combined effect of the variation of the fractions of GNBs and incidental dislocation boundaries (IDBs) and the variation of the average misorientations of GNBs and IDBs.
      
The constancy of the average misorientations is a combined effect of the variation of the fractions of GNBs and incidental dislocation boundaries (IDBs) and the variation of the average misorientations of GNBs and IDBs.
      
Near-perfect elastoplasticity in consolidated 325-mesh Cu powder is explained by a combined effect of strain hardening accommodated by large grains in the bimodal structure and softening caused by recovery mechanisms.
      
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Field and laboratory investigations on the overwintering forms of five species ofaphids, the cotton aphid, Aphis gossypii Glover, the English grain aphid, Macrosiphumgrandrium (Kirby), the turnip aphid, Rhopalosiphum pseudobrassicae (Davis), the greenpeach aphid, Myzus persicae (Sulzer), and the black citrus aphid, Toxoptera aurantii(Fonsc.) were carried out during 1955--1962 in Chungking, Szechuan. Under natural conditions, the cotton aphids lay overwintering eggs on certain de-ciduous woody plants, such as...

Field and laboratory investigations on the overwintering forms of five species ofaphids, the cotton aphid, Aphis gossypii Glover, the English grain aphid, Macrosiphumgrandrium (Kirby), the turnip aphid, Rhopalosiphum pseudobrassicae (Davis), the greenpeach aphid, Myzus persicae (Sulzer), and the black citrus aphid, Toxoptera aurantii(Fonsc.) were carried out during 1955--1962 in Chungking, Szechuan. Under natural conditions, the cotton aphids lay overwintering eggs on certain de-ciduous woody plants, such as the cotton-rose, Hibiscus mutabilis L., and the shrubbyalthaea, Hibiscus syriacus L. This species, however, will remain in parthenogenetic formsthoroughout the winter season on the herbaceous plant, such as the hollyhock, Althaearosea (L.). The English grain aphid, the turnip aphid and the black citrus aphid gene-rally continue their parthenogenetic generations in winter on their particular host plants.It seems more complicate in the case of the green aphid, those bred on winter growingvegetable crops, such as the various species of crucifers, the lettuce and spinach, usuallyreproduce asexually in winter; but a few sexuparae, sexual females and males may alsoappear on peach leaves. As the sexual females would not lay any overwintering eggwithout mating, and the males usually appear later on peach tree than the sexual females,hence the females are usually incapable of laying eggs before the falling of the peachleaves. Under experimental conditions, when the turnip aphid bred on old yellowing leavesof unhealthy plants of rape at a certain low temperature would produce a few sexualfemales and eggs, but no sexual male was observed. Some results were obtained fromfield investigations on the Chinese cabbage. The English grain aphid when bred arti-ficially on ears of wheat plants, which were sown early in August and reached headingand milky stage early in winter, produced a few males, but no sexual female or eggwas observed. Insectary breeding tests proved that inoculation of the cotton aphids ontohollyhock from field cotton, cotton-rose and shrubby althaea produced parthenogeneticoffspring; when the cotton aphids inoculated onto shrubby althaea twigs, cultured intap water, produced sexual offspring. These results were quite similar to those obtainunder natural conditions. The writer considers that the temperature, the photoperiod and the kinds and growthconditions of host plants will bring a combined effect on the reproduction of sexualforms in aphids, but the effect will be various in different species. Therefore, in thesame locality, different species of aphids may have different overwintering forms becauseof their different reactions to the environmental factors. Moreover, in one districtwhere the environmental conditions are fundamentally alike, under a definite low tem-perature, a species of aphid may either reproduce parthenogenetically or produce sexualforms in winter, depending essentially upon the different nutrient conditions in the dietobtainable by the species from its host plants.

在重庆地区的自然条件下,棉蚜Aphis gossypii Glover在冬季既可以在落叶木本植物如木芙蓉Hibiscus mutabilis L.、木槿 Hibiscus syriacus L.上产生两性世代的雄蚜和产卵雌蚜,并产卵过冬;也可以在宿根草本植物如蜀葵 Althaea rosea(L.)上继续以孤雌胎生世代的有翅或无翅胎生雌蚜繁殖过冬。麦长管蚜 Macrosiphum granarium(Kirby)、菜缢管蚜 Rhopalosiphum pseudobrassicae(Davis)和桔二岔蚜Toxoptera aurantii(Fonsc)通常都继续以孤雌胎生世代繁殖过冬。桃蚜 Myzus persicae(Sulzer)在十字花科蔬菜、莴笋Lactuca sativa var.angustana Irish、菠菜 Spinacia oleracea L.等冬季作物上可以继续营弧雌胎生世代繁殖,但在桃树上Prunus persica Stokes 可以出现少数两性世代的产卵雌蚜和雄蚜。由于雄蚜的出现时期较晚,将近在落叶以前,而产卵雌蚜不经交配通常均不能产卵,因此在桃树落叶前产卵雌蚜常未及产卵而随...

在重庆地区的自然条件下,棉蚜Aphis gossypii Glover在冬季既可以在落叶木本植物如木芙蓉Hibiscus mutabilis L.、木槿 Hibiscus syriacus L.上产生两性世代的雄蚜和产卵雌蚜,并产卵过冬;也可以在宿根草本植物如蜀葵 Althaea rosea(L.)上继续以孤雌胎生世代的有翅或无翅胎生雌蚜繁殖过冬。麦长管蚜 Macrosiphum granarium(Kirby)、菜缢管蚜 Rhopalosiphum pseudobrassicae(Davis)和桔二岔蚜Toxoptera aurantii(Fonsc)通常都继续以孤雌胎生世代繁殖过冬。桃蚜 Myzus persicae(Sulzer)在十字花科蔬菜、莴笋Lactuca sativa var.angustana Irish、菠菜 Spinacia oleracea L.等冬季作物上可以继续营弧雌胎生世代繁殖,但在桃树上Prunus persica Stokes 可以出现少数两性世代的产卵雌蚜和雄蚜。由于雄蚜的出现时期较晚,将近在落叶以前,而产卵雌蚜不经交配通常均不能产卵,因此在桃树落叶前产卵雌蚜常未及产卵而随落叶从桃树上消失。从接种饲养试验的结果证明:麦长管蚜在提早至8月播种,至冬季已进入乳熟期的小麦Triticum aestivum L.穗上,可以产生少数雄蚜,但未见产卵雌蚜。菜缢管蚜在生长衰弱的油菜 Brassica napella Choix的黄脚叶上,可以产生少数产卵雌蚜及卵,但未见雄蚜。在田间瓢儿白Brassica chinensis var

Objective.The occurence of embrittlement is a knotty problem to secondary hardening steel in spite of the advantage of high hardness in the range of secondary hardening temperature of this kind of steel.Studies on temper brittlement have been widely carried out for years,but study concerning secondary hardening embrittlement has not been done in relation with grain boundary segregation as yet.This paper reports the experimental investigation on the behaviors of grain boundary segregation and fracture in 4.2Mo-0.4C-0.06P...

Objective.The occurence of embrittlement is a knotty problem to secondary hardening steel in spite of the advantage of high hardness in the range of secondary hardening temperature of this kind of steel.Studies on temper brittlement have been widely carried out for years,but study concerning secondary hardening embrittlement has not been done in relation with grain boundary segregation as yet.This paper reports the experimental investigation on the behaviors of grain boundary segregation and fracture in 4.2Mo-0.4C-0.06P steel.Auger spectroscopy,SEM and hardness tester were applied to investigate grain boundary embrittlement in connexion with P grain boundary segregation in 4.2Mo-0.4C-0.06 P steel.Specimens made of hot-rolled strip,were specially prepared for tempering,ageing and fracture tests.It is found that this steel exhibits secondary hardening behavior with a peak value at 600℃during tempering,and that a high embrittlement susceptibility will acompany the secondary hardening.As functions of tempering temperture,parameters as variation in hardess,P grain boundary concentration and percentage of intergranular fracture give proof that grain boundary embrittlement will be enhanced by a combined effect of increases in P grain boundary segregation and in hardness when tempering the steel in the range of secondary hardening temperature.Also,it is shown that grain boundary chemistry can be influenced by secondary hardening phenomenon.It arises from the fact that during secondary hardening this steel in underaged state distinctly differs from that in overaged state in morphology and coherency.Fig.1 Variation of hardness,as a function of tempering temperauturewith 1hr tempering.Fig.2 Grain boundary concentrations of (a)P; (b)C and (c)Mo,as functions of tempering temperature with 1hr tempering.Fig.3 Relationships of (a)P-C and (b) Mo-P at grain boundaries,after 1hr tempering at 500~700℃.Fig.4 Percentage of intergranular fracture as a function of tempering temperature with 1hr tempering. Fig.5 Variations (a)hardness (b),(c),(d)----grain boundary concentrations of P,C and Mo respectively and (e) percentage of ieter-granular fracture,all as a function of aging time,aging at 500℃.Fig.6 Relationships of (a) P-C and (b) Mo-P at grain boundaries,after0~300hrs aging at 500℃.Photo 1 SEM fractographs of specimen,(a)quenched; (b)tempered at 540℃; (c)tempered at 600℃ and (d)tempered at 700℃.

用扫描俄歇探针、扫描电镜及硬度测量等方法研究了4.2Mo-0.4C-0.06P钢中晶间析出和晶间脆性。结果表明:此钢在500~700℃回火存在二次硬化现象和高晶闻脆性,且晶间脆性与晶界上P的浓度和材料的硬度有关。磷的晶间析出受到二次硬化的影响,因在二次硬化的欠时效和过时效状态下,碳化物具有不同的形态和共格状态。

Four heavy metals--copper, zinc, lead and cadmium were found in the dischargedwater from the lead and zinc smeltry. These four heavy metals remain a rather highcontent in the water all the year around. Most of them was deposited in the silt of theriverbed, it is considered to be the potential harmfulness to fish. These heavy metals gradually accumulate in planktons and then transfer to the fish body. The coeffcientof acamulation is Zn = 1. 6×10~4, Cu =1. 9×10~3, respectively. The content of lead andcadmium in...

Four heavy metals--copper, zinc, lead and cadmium were found in the dischargedwater from the lead and zinc smeltry. These four heavy metals remain a rather highcontent in the water all the year around. Most of them was deposited in the silt of theriverbed, it is considered to be the potential harmfulness to fish. These heavy metals gradually accumulate in planktons and then transfer to the fish body. The coeffcientof acamulation is Zn = 1. 6×10~4, Cu =1. 9×10~3, respectively. The content of lead andcadmium in the fish body is not less than 10~4.The ratio of the content of the four heavy metals in the body of the deformedfish is Zn: Cu: Pb: Cd = 59: 10: 3: 1. The content of cadmium in the deformed fish waseighteen times higher than that in the controlled group. This shows that the highconcentration of cadmium may be the causal factor of the deformation of fish.The experiment has proved that the pernicious heavy metals in the waste waterdischarged from the smeltery have toxic effects on fish. When the water contains1.4% in volume, the TLM of the experimental fish is 48. When the content of zincis high above 1 .5mg/l, fish will die in acute poisoning and the content of zinc andcadmium reach to 0. 25mg/l and 0. 0125mg/l, respectively, the symptoms of ataxia inswimming, paralysis and deformation will appear. Zinc has a quick toxic effect,always cause high mortality. Cadmium has a great effect on deformation. The mixedsolution of Zn and Cd has a combined effect on fish.

本文报道了铅锌冶炼厂废水中所含有的铜、锌、铅、镉污染物对鱼类的毒性调查。初步查明了污染物在不同季节、气温条件下引起鱼类死亡、畸变的影响。通过调查分析发现,污染区鱼体重金属含量显著高于对照区;畸变鱼高于未畸变鱼。畸变鱼体内四种重金属含量的顺序是锌>铜>铅>镉,与水中含量顺序一致。畸变鱼体内镉的含量比对照区高18倍,从而认为镉与畸变可能有密切关系。鱼体的不同部位四种重金属含量有明显差异,值得进一步探讨。

 
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