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latter two
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  后两种
     Transforming 2,4,6-trinitrotoluene to 1,3,5-benzenetriol can make good use of theproduce route of 2,4,6-trinitrotoluene and find a new outlet for 2,4,6-trinitrotoluene. 2,4,6-trinitrotoluene was oxidized separately by Na2Cr2O7/H2SO4, KClO3/HNO3 andKClO4/H2SO4/H3PO4. The processes of oxidation using the latter two oxidizers weremainly argued.
     实验中采用了三种氧化剂对 TNT 进行氧化,分别为 Na_2Cr_2O_7/H_2SO_4(98%)、KClO_3/HNO_3(68%)、KClO_4/ H_2SO_4(98%)/ H_3PO_4(98%),并着重考查了后两种氧化剂作用下的工艺条件。
短句来源
     The latter two alloys have higher strength and hardness than 90W-Ni-Cu alloy and suitible for die material of electro-heat upsetting.
     后两种合金比90W-Ni-Cu合金的强度和硬度高,适合于作电镦模具材料。
短句来源
     The latter two phases in copperware corrosion product have ever been investigated and reported for ancient copper wares but Cu3 (PO4)3· 3H2O phase was found for the first time.
     后两种物相在过去古铜器锈蚀物研究的资料中已有报导,而Cu_3(PO_4)_2·3H_2O则是首次发现。
短句来源
     Results The 308 1 1 genotype was found in 61/78(78 2%) of AS patients compared to 29/52(55 8%) of the B27 positive controls ( P <0 05),with an expected concomitant decrease in the 308 1 2 and 308 2 2 genotypes in the patient population. The level of serum TNF and partial clinical parameters in the latter two genotype AS patients were higher than those in 308 1 1 genotype AS patients.
     结果  78例AS患者中为 30 8 1 1基因型的有 6 1例 (78 2 % ) ,明显高于HLA B2 7阳性的健康人 (5 5 8% ) (P <0 0 5 ) ,而AS患者的 30 8 1 2和 30 8 2 2基因型频率相应降低 ,且后两种基因型患者血清TNF α水平及临床部分指标明显高于 - 30 8 1 1基因型的患者。
短句来源
     rubricatus (Fallén) \[the latter two recorded from China for the first time\],P.
     rubricatus (Fall啨n) (后两种为中国新纪录种 ) ; 冷杉松盲蝽P .
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  后两个
     The four parameters Q1,K1,Q2,K2 of erythrocyte insulin receptors were decreased in hyperthyroidism with abnomal OGTT group,The latter two parameters in abnomal OGTT group were significantly lower than in control group(P<0.01). There was a significant negative correlation between two-hour postprandial blood glucose level and K2 in abnormal OGTT group(r=r-0.4190,P<0.05).
     甲亢OGTT异常组红细胞胰岛素受体的四个参数Q1、K1、Q2、K2均减低,后两个参数与正常组比较有显著性差异(P<0.01),且甲亢OGTT异常组餐后2小时血糖与K2值呈显著负相关(r=-0.4190,P<0.05)。
短句来源
     There exist three ternary compound phases which are separately AgTlS,Ag 29 Tl 11 S 20 and Ag 17 Tl 3S 10 . The latter two phases were first compounded in this experement.
     Ag2S-Tl2S假二元系在250℃存在三个三元合成相,它们分别为TlAgS、Ag29Tl11S20和Ag17Tl3S10,后两个相是该实验首次合成
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     MAP at the time points of intubation, 10min after intubation, retraction of eye muscle and HR at the latter two points had significant differences among the three groups (P<0.01).
     MAP在插管时、插管后10min、牵拉眼肌时以及HR在后两个时点均有统计学意义(P<0.01)。
短句来源
     Sterilizing effects of water bathing such as 85 ~ 90℃, 90 ~ 95℃. 95 ~ 100℃ were magnified gradually. Temperature range from 85 to 90℃had poorer effect than 90~95℃ or 95 ~ 100℃, but the latter two didn't show any significant differences.
     水浴杀菌采用三个温度段:85~90℃、90~95℃、95~100℃,其杀菌效果递增,但后两个处理差异不显著,因此,为了节能实践中采用90~95℃,30min杀菌。
短句来源
     Group II includes P.albina, P.nigra, P.chemnitzi and P.radiata, among which the former two and latter two species form 2 distinct subgroups, Group IIA and IIB.Group III includes P.margaritifera and P.maxima.
     chemnitzi和射肋珠母贝P. radiata,其中前2个种聚合成1枝,后两个种聚合成另一枝,分别形成两个亚群类群IIA和类群IIB。
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  后两类
     The former three types of xenoliths mainly came from lower crust, whose equilibrium temperatures and pressures were high (720 ℃~950 ℃, and 0.74 GPa~1.50 GPa respectively), and the latter two formed in middle crust, whose temperatures and pressures were low (510℃~735℃, and 0.60 GPa~0.98 GPa respectively).
     温压估算表明,前3类包体主要来自下地壳,平衡温压较高(720℃~950℃,0.74GPa~1.50GPa); 后两类包体主要来自中地壳,平衡温压较低(510℃~735℃,0.60GPa~0.98GPa)。
短句来源
     Relatively there was less rainfall in the latter two kinds of rainstorms.
     后两类雨量较小。
短句来源
     This method may be applied to solve the eigenvalue problems of differential equations, of system of differential equations and of matrix exc. Two examples for the latter two cases are given which offer results with relatively high accuracy.
     本文方法可以求解微分方程的特征值及微分方程组的特征值、矩阵特征值等问题,后两类问题的两个算例结果精度很高。
短句来源
     The ratio free saturated to total saturated fatty acid is the highest in intrahepatic pigment stone and less in extrahepatic pigment stone,which significantly differs from the latter two kinds of stones.
     游离饱和/总饱和脂肪酸的比值,肝内色素类结石最高,肝外色素类结石次之,较后两类结石都有显著性差异。
短句来源
     As preparation, authors present the multisignature based on Hess's ID-based signature scheme which the latter two types of proxy signature schemes will use. This is the first identity-based multisignature scheme from bilinear pairings.
     作为准备 ,作者提出了基于Hess的基于身份签名体制的多签名体制 ,这是第一个来自双线性配对的基于身份的多签名体制 ,后两类代理签名体制将用到它 .
短句来源
  “latter two”译为未确定词的双语例句
     ①Infarction size: That of U50488H group was smaller than the ischemic reperfusion group and Nor-BNI group (0.039±0.01),(0.085±0.01),(0.077±0.02) cm2,P < 0.01, while the differences between the latter two groups were not significant.
     ①心肌梗死面积:U50488H组小于缺血再灌注组和Nor-BNI组[(0.039±0.01),(0.085±0.01),(0.077±0.02)cm2,P<0.01],后两组差异不显著。
短句来源
     ①The myocardial contractility at systolic phase of the model group was lower than the control group and allopurinol group [(21.7±2.1), (46.9 ±4.9), (42.9±4.2) mN/mm2, P < 0.05], and there was no significant difference between the latter two groups (P > 0.05).
     ①收缩期模型组心肌收缩力低于对照组和别嘌呤醇组[(21.7±2.1),(46.9±4.9),(42.9±4.2)mN/mm2,P<0.05],后2组间差异不显著(P>0.05)。
短句来源
     ②The [Ca2+]i at systolic phase of the model group was lower than the control group and allopurinol group [(0.31±0.02), (0.44±0.04), (0.38±0.04) μmol/L, P < 0.05], and there was no significant difference between the latter two groups (P > 0.05).
     ②收缩期模型组细胞内钙低于对照组和别嘌呤醇组[(0.31±0.02),(0.44±0.04),(0.38±0.04)μmol/L,P<0.05],后2组间差异不显著(P>0.05)。
短句来源
     Results:Reperfusion rate of the 5 groups were 84.6%、76.9%、68.8%、45.6% and 50% respectively,with significant difference between the former three groups and the latter two groups(P<0.05).
     结果:5组血管再通率分别为84.6%、76.9%、68.8%、45.6%和50%,前3组与后2组间比较,差异有显著性意义(P<0.05);
短句来源
     The VAS score at 48 and 72 hours after operation was significantly higher in the 0.5 g/L and 0.75 g/L groups than in the 1 g/L and 1.25 g/L groups(P< 0.05),and it had insignificant difference between the latter two groups.
     术后48,72h时0.5和0.75g/L罗比卡因组分值高于1和1.25g/L罗比卡因组(P<0.05),1和1.25g/L罗比卡因组间比较无明显差别。
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  latter two
The former two problems have been well reviewed by many researchers, whereas the latter two have not been comprehensively surveyed to our knowledge.
      
In this paper, we try to make a detailed introduction to the four problems, especially the latter two.
      
However, the realization of the integral-equation method in the latter two cases [2, 3] contradicted the idea of interpenetrating continua which was used as a basis for the model of filtration in cracked and porous media [4].
      
It has been found that a linear relationship exists in the bilogariphmic coordinates between the former two and the latter two values.
      
The latter two components may be replaced by amino acids metabolized to NH4+ and α-ketoglutarate: histidine, arginine, glutamine, proline, or glutamic acid.
      
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The volumetric method of determination of bismuth as proposed by Malaprade is based upon the fact that bismuth hydroxide can be converted into the trithiosulfatobismuth complex by first adding a large excess of sodium thiosulfate and then adding carefully dilute nitric acid to dissolve the hydroxide with methyl red as the indicator for control. The complex can be titrated with standard sodium or potassium hydroxide solution using phenolphthalein as an indicator. The chief reactions are: Bi(OH)_3+3S_2O_3"+SH~(?)→[Bi(S_2O_3)_3]'''+3H_2O...

The volumetric method of determination of bismuth as proposed by Malaprade is based upon the fact that bismuth hydroxide can be converted into the trithiosulfatobismuth complex by first adding a large excess of sodium thiosulfate and then adding carefully dilute nitric acid to dissolve the hydroxide with methyl red as the indicator for control. The complex can be titrated with standard sodium or potassium hydroxide solution using phenolphthalein as an indicator. The chief reactions are: Bi(OH)_3+3S_2O_3"+SH~(?)→[Bi(S_2O_3)_3]'''+3H_2O (1) 2[Bi(S_2O__)_3]'''+5OH'+NO_3'→(BiO)_2OH·NO_3+6S_2O_3''+2H_2O (2)The quantity of bismuth can be calculated from the consumed alkali according to equation (2).We have found that for samples of 0.1—0.17 gram of bismuth with the addition of ten to fifteen grams of sodium thiosulfate, the relative error of determination is ±0.5%, agreeing with the result of Malaprade. The following ions present up to the amount indicated respectively do not interfere with the determination of 0.1 gram of bismuth:(1)Pb (II), 80mg; Cr(III), 25mg in the presence of 15 grams of sodium thiosulfate;(2)Cu (II) and Co (II), 100 mg; Fe (III), 80 mg; Zn (II), 40 mg; Ca (II), 200 mg; Ag (I), 30 mg; Mo (VI), 30 mg in the presence of 10 grams of sodium thiosulfate;(3) Ni (II), 40mg in the presence of 10 grams of sodium thiosulfate, or 40—60 mg in the presence of 15 grams of sodium thiosulfate;(4)Cd and Mn.On the other hand, As (III, V), Cl' and SO_4" ions do interfere. The latter two anions form insoluble oxy-salts in dilute nitric acid. Accordingly any arsenic present in bismuth samples should be removed previously. As to tin, antimony and tungsten which usually occur in bismuth ores, they can be removed in the course of opening with concentrated nitric acid, which converts them respectively into the insoluble rnetastannic, meta-antimonic and tungstic acids.The total time for a complete titration is about half an hour, being five to ten times shorter than that required by the gravimetric methods. his rapid method is probably suitable for the determination of bismuth in ores etc.

用标准碱滴定硫代硫酸铋络合物的方法既属快速(约半小时),而又相当准确(铋含量在0.1—0.17克时,相对误差在±0.5%以下)。在0.1克的铋样中,曾经分别加入银、铅、铜、砷、铁、铬、锌、钴、钙、钙、钼等离子进行试验,只有砷发生干扰。溶液中不能有氯离子与硫酸根。

The method of Pollard et al. [J. Chem. Soc. 1863 (1951)] possesses the disa-dvantages that (a) tailing takes place in the case of vanadium and molybdenum,and (b) tungsten remains at the original spot, which tends to retain some moly-bdenum. It is expected to solve these troubles by keeping the valency and thestate of association unchanged during elution, and confining the elements testedin the form of stable and soluble complexes. The per-acids formed by these threeelements and hydrogen peroxide [Feigl and Raacke,...

The method of Pollard et al. [J. Chem. Soc. 1863 (1951)] possesses the disa-dvantages that (a) tailing takes place in the case of vanadium and molybdenum,and (b) tungsten remains at the original spot, which tends to retain some moly-bdenum. It is expected to solve these troubles by keeping the valency and thestate of association unchanged during elution, and confining the elements testedin the form of stable and soluble complexes. The per-acids formed by these threeelements and hydrogen peroxide [Feigl and Raacke, Anal. Chim. Acta 1, 317 (1947)]were tried and found to be satisfactory. Seven eluents were tested. Eluents no. 1—3 consist of n-butanol -H_2O_3-HNO_3in slightly different ratios, the R_F values found are practically the same. Byincorporating dioxane or benzoylacetone into the eluents mentioned, we haveeluents no. 4 and 5 respectively. The R_F values for these three elements witheluents 4 and 5 are several fold greater than those with eluents no. 1 and 2. Ineluents no. 6 and 7, ammonium persulfate is used instead of hydrogen peroxide.The results for the latter two eluents are not promising; as the spots of vanadiumand tungsten diffuse pronouncedly and the latter does not move practically (R_F=0.01). The R_F values of these three elements when chromatographed singly andadmixed are given in Table 1. Figure 1 shows some typical chromatograms. The separations of Ⅴ(Ⅴ) Mo(Ⅵ), and W(Ⅵ), from one other are possiblewith eluents no. 1—3. With eluents no. 4 and 5, it is possible to separate Ⅴ fromMo, Mo from W, and Mo from bothⅤ and W, but it is impossible to separate Ⅴand W. With eluents no. 6 and 7, it is possible only to separate Mo from W,. andⅤ from Mo.

本文借过氧化氢与钒、钼及钨形成可溶而稳定的过氧酸作纸上色谱分离,继用单宁溶液显色。曾试验七种不同成分的展开剂。其中以正丁醇-过氧化氢-硝酸(展开剂1—3)分离较好。如再加二氧六环(展开剂4)则此三元素的R_F值增大数倍而钒、钨分离不开。利用过氧酸的形成可避免钨停留在原点和钒、钼的拖尾现象。

A method of extraction,separation and determination of the residual rogor (O,O-dimethyl S-(N-methyl-carbomoylmethyl) phosphorothionate) in vege- tables and fruits is described.The residual quantities of the rogor retained in the cabbages of different growing stages,in two-varieties of rapes and in leaves and fruits of peach tree were determined successively at intervals of the first,third,fifth and seventh day after the spraying of the insecticide. The insecticidal effects against the aphids as measured by lethal...

A method of extraction,separation and determination of the residual rogor (O,O-dimethyl S-(N-methyl-carbomoylmethyl) phosphorothionate) in vege- tables and fruits is described.The residual quantities of the rogor retained in the cabbages of different growing stages,in two-varieties of rapes and in leaves and fruits of peach tree were determined successively at intervals of the first,third,fifth and seventh day after the spraying of the insecticide. The insecticidal effects against the aphids as measured by lethal rate (in %) in respective period were recorded. It is found that at the first day after spraying the residual rogor in buds and stem of the cabbages at budding stage is about 2.5 times as that of the leaves of the same plant,while the amount of the insecticide in the whole plant at seedling stage is between the latter two.The rogor residue in Sun-li rape (cabbage type) is higher than that of the Pai-go rape (Chi- nese cabbage type).For the peaches,the rogor retained in the leaves is about 5 times as that of the fruits.The insecticidal effect agrees very well with the residual rogor in the tested samples. All the rogor residues retained in the tested samples are below I ppm. which is far below the recognized safety margin,2 ppm.

1.作者描述了一个效果较好而又节省有机溶剂的提取及分离乐果的方法。2.不同生育期青菜(四月慢)中乐果残留量的测定指出:在同株孕蕾抽苔期青菜上,苔莢中乐果含量为菜叶的2.5倍(施药一天后);同时也大于小菜期全株的含量。3.所试两种不同类型的油菜中,甘蓝型(胜利油菜)的乐果残留量大于白菜型(白果油菜)。这种差具可能由于生态的而非生理的原因所致。4.施药一天后,同株桃树上,桃叶中的乐果残留量为桃子的5倍。5.施药五天后,所测各样品的乐果残留量均小于1ppm,这个数值低于规定的安全限量2ppm。

 
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