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  it was proved
     Results The structure and absolute configuration of the product obtained was studied by MS, H 1nmr. It was proved that construction and configuration of the compound obtained is [1R-(1α,2α,3β)]-4-carbonyl-podophyllotoxin.
     结果 用质谱 (MS) ,核磁共振氢谱 (H1 NMR) ,研究了得到产物的分子结构和立体化学 ,证明它是 [1R - ( 1α,2α ,3β) ]- 4-羰基鬼臼毒素。
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     The definition of weak implication Algebra on a partial ordered set was introduced. It was proved that weak implication algebra satisfying the condition(x→y)→y =(y→x)→x forms MV-algebra and weak R_0-algebra.
     引入偏序集上的弱蕴涵代数的概念,证明它在满足条件(x→y)→y=(y→x)→x时构成M V代数,也构成弱R0代数.
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     This system worked very well from April to July in 2005,and it was proved to be very practical and effective.
     在2005年4~7月期间此系统工作得很好,证明它是实用而有效的。
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     It was proved by use: the instrument has many advantage such as the safety of using, simplicity on operation and high accuracy of measurement.
     该仪器经使用证明:它具有使用安全、操作简便、测量准确等优点。
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     The systemhad operated well on BEI--1 LINAC. It was proved that all kind of properties ofth the system reached design targets.
     这套系统在BEI-1电子直线加速器上能正常运行,证明它的各项性能达到了设计指标。
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     A good peak of thallium is obtained in a solution of 0.08M citric acid-0.02M EDTA-5×10~(-5)MEg(NO_3)_2(pH6) by JP-MI pulse polar-raphy with glassy carbon electrode.
     本文提出用0.08M柠蒙酸-0.02MEDTA-5×10~-5MHg(NO_3)_2 PH6的底液,用JP-Ml型脉冲极谱仪,配合玻碳电极,选择适当的仪器参数,可以得到对称性很好的溶出峰,循环伏安图证明它,在此溶液中的可逆性好,大量共存离子无干扰。
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     After several year operation at the field test site, it was demonstrated that this device is stable and sprinkling homogeneous, with the rainfall intensity from 2 mm/h to 100 mm/h and the low limit of 2 mm/h.
     经过两年多现场试验中的使用 ,证明它具有降雨强度可变范围宽 (小降雨器 2~ 10 0 mm/h、大降雨器 4~ 10 0 mm/h) ,降雨强度下限低 (小降雨器 2 mm/h、大降雨器 4 mm/h)和性能稳定等特点。
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     DPX - 3300 draught machine can draw the size of figure is 8400 mm × 594 mm. In practice,it is proved that it can draw the size of plane figure is 1680 mm × 590 mm.
     DPX—3300绘图机原绘制的图幅为8 400 mm ×594 mm,经过实际证明它能够绘制的图幅为 1680mm×590 mm的平面图。
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     In this paper, we consider the Marcinkiewicz integral operator with rough kernel defined by where and prove that is bounded on the Herz spaces (K|·)qa,q as well as bounded from (K|·)1q,p to WK1q,p under certain sufficient conditions.
     本文考虑如下的Macinkiewicz积分算子其中在一定的条件下证明它是在Herz空间(K|·)qa,q上有界同时也是从Herz空间(K|·)1a,p到弱Herz空间W(K|·)1a,p上有界.
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     Structural studies demonstrated a substitution of Glycine by Lysine occurring at position 26 of β-chain. Thus the mutant is identified as Hb-E α_2β_2 26 (B_8) Glu-Lys.
     结构分析证明它是HbE即在β链26位上的谷氨酸被赖氨酸所取代HbEα_2β_226(B_8)Glu—Lys。
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     Our method is popularized from R.
     是R.
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     This is an extension of W.
     是W.
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     In this paper,a conjecture put forward by G.
     证明了G .
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     A conjecture of J.
     证明 J.
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     The convergence of the iteration in such methods is proved.
     证明的迭代收敛性。
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  it was proved
By use of special wavelet bases associated to accretive or pseudo-accretive functions, it was proved that all Calderón-Zygmund operators satisfying certain conditions form an algebra.
      
It was proved that the cluster results were equivalent in dataset with two different cluster algorithms: WFCM and FCM.
      
It was proved that the cross-linking reaction between HPAE and SA followed a two-step mechanism.
      
It was proved to be operable if the controlled plant is subjected to the action of unmeasurable bounded perturbations.
      
Razumikhin, it was proved that if the right-hand sides of these equations are free of the linear terms relative to the phase variables, then the asymptotic stability is retained for any delay.
      
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Some of the viewpoints held by Prof. Chwang Chien-ting in his paper "The Fusion Point of Ash of Chinese Coals" (this journal, 1957, 2, No. 2, 114) are quite worthy to notice and discuss. 1. The assumption made by Prof. Chwang concerning the composition of coal ash cannot be warranted. In fact, the various ingredients of coal ash originate from very complicated mineral matters. Thus the assumption that coal ash is simply composed of the various metallic oxides mechanically mixed is unjustifiable. Prof. Chwang...

Some of the viewpoints held by Prof. Chwang Chien-ting in his paper "The Fusion Point of Ash of Chinese Coals" (this journal, 1957, 2, No. 2, 114) are quite worthy to notice and discuss. 1. The assumption made by Prof. Chwang concerning the composition of coal ash cannot be warranted. In fact, the various ingredients of coal ash originate from very complicated mineral matters. Thus the assumption that coal ash is simply composed of the various metallic oxides mechanically mixed is unjustifiable. Prof. Chwang further postulated that when SiO_2/Al_2O_3=1.17 (i.e. the relative amounts of SiO_2 and Al_2O_3 in ash conform to the composition of kaolin Al_2O_3·2SiO_2·2H_2O and no free SiO_2 is present), the increase of percentage of metallic oxides in ash will not reduce the fusion point of the ash as there is no free SiO_2 to combine with the metallic oxides to form low-melting silicates. However, this postulation is inconsistent with the statement of the original paper and. also disproved by the experimental results. 2. For the same SiO_2/Al_2O_3 ratio, the increase of content of metallic oxides b(=Fe_2O_3+CaO=MgO=K_2O=Na_2O) in ash usually reduces the fusion point of the ash. But our experimental results show that when b exceeds 35%,the fusion points are higher than those for b equal to 30%. 3. For the same SiO_2/Al_2O_3 ratio, the fusion point of the ash increases with R(=SiO_2/Al_2O_3/Fe_2O_3+CaO+MgO+K_2O+Na_2O);when R is of approximately the same value, the smaller the SiO_2/Al_2O_3 ratio, the higher will be the fusion point. When R approaches or is smaller than 1, the fusion point shows no definite regularity, irrespective of the variation of SiO_2/Al_2O_3 ratio. 4. In the whole range of the coalification series, the content of volatile matter can represent neither the composition of the coals themselves, nor that of the ashes, hence it bears no relation with the fusion point of the ash. From the experimental results, no clear correlation can be found between the sulfur content and the iron content in ash, so that the fusion point is not closely related with the sulfur content of the ash. The influence of SiO_2 on the fusion point of coal ash is still uncertain and disputable, pending further investigation and verification.

莊前鼎教授所著“中國煤的灰熔點”一文中的部分論點是值得商榷的。 (1) 根據莊先生提出的理論,即假定煤灰的主要成分係由瓷土+自由SiO_2+各種金屬氧化物所組成,因而當煤灰中的SiO_2/Al_20_3=1.17時(即SiO_2與Al_2O_3都被認為是來自瓷土——2SiO_2·Al_2O_2·2H_2O,而無自由SiO_2存在時),雖金屬氧化物增加,但沒有自由SiO_2和金屬氧化物結合而降低灰熔點。然而實際上煤灰成分是來自煤中極其複雜的無機礦物質,將煤灰簡單地假定為瓷土、自由SiO_2及金屬氧化物的機械混合物是不恰當的。這一論點不僅與原文內容有不符之處,而且實驗結果也證明它不能成立。 (2) 一般在煤灰中的SiO_2/Al_2O_3相同時,金屬氧化物b%(Fe_2O_3+CaO+MgO+K_2O+Na_O)的增加,能降低煤灰熔點。但是根據試驗結果,富b%達35%以上時,灰熔點反較b為30%時高。 (3) 當SiO_2/Al_2O_3相同時,R=(SiO_2+Al_2O_3)/(Fe_2O_3+CaO+MgO+K_2O+Na_2O)愈大,灰熔點愈高。如R近似時,SiO_2/Al_2O_3愈小,灰熔點愈高。當R...

莊前鼎教授所著“中國煤的灰熔點”一文中的部分論點是值得商榷的。 (1) 根據莊先生提出的理論,即假定煤灰的主要成分係由瓷土+自由SiO_2+各種金屬氧化物所組成,因而當煤灰中的SiO_2/Al_20_3=1.17時(即SiO_2與Al_2O_3都被認為是來自瓷土——2SiO_2·Al_2O_2·2H_2O,而無自由SiO_2存在時),雖金屬氧化物增加,但沒有自由SiO_2和金屬氧化物結合而降低灰熔點。然而實際上煤灰成分是來自煤中極其複雜的無機礦物質,將煤灰簡單地假定為瓷土、自由SiO_2及金屬氧化物的機械混合物是不恰當的。這一論點不僅與原文內容有不符之處,而且實驗結果也證明它不能成立。 (2) 一般在煤灰中的SiO_2/Al_2O_3相同時,金屬氧化物b%(Fe_2O_3+CaO+MgO+K_2O+Na_O)的增加,能降低煤灰熔點。但是根據試驗結果,富b%達35%以上時,灰熔點反較b為30%時高。 (3) 當SiO_2/Al_2O_3相同時,R=(SiO_2+Al_2O_3)/(Fe_2O_3+CaO+MgO+K_2O+Na_2O)愈大,灰熔點愈高。如R近似時,SiO_2/Al_2O_3愈小,灰熔點愈高。當R接近1或小於1時,則不論SiO_2/Al_2O_3變化如何,與灰熔點之間無任何規律的關係。 (4) 從無煙煤到長焰煤,揮發分V~Γ既不能完全代表煤成分,更不能作為煤灰成分,因之與灰熔點無任何關係。根據實驗結果,煤中的全硫量較高時,煤灰中Fe_2O_3含量並不一定高,故與灰熔點並無明顯的關係。SiO_2含量對煤灰熔點的作用尚難確定,有待於進一步的研究。

This paper attempts to answer the following two questions: (1) Is it possible to derive the law of distribution of hydrological frequency theoretically(2) What type of distribution curve should be adopted as the model of hydrological frequency curve and how to determine their parameters? The results obtained may be summarized as follows: 1. Hydrological phenomena are time series with concealed periodic fluctuations. The results from statistical analysis based upon the current assumption that hydrological phenomena...

This paper attempts to answer the following two questions: (1) Is it possible to derive the law of distribution of hydrological frequency theoretically(2) What type of distribution curve should be adopted as the model of hydrological frequency curve and how to determine their parameters? The results obtained may be summarized as follows: 1. Hydrological phenomena are time series with concealed periodic fluctuations. The results from statistical analysis based upon the current assumption that hydrological phenomena are independent stochastic variables should be accepted with due considerations. 2. In view of the regional nature of hydrological phenomena, the current parctice of analyzing samples taking from a single station only is, in effect, to narrow the sampling field arbitrarily from a larger area to a point, thus reducing the accuracy of the statistical results. Hence, the synthetic utilization of the data of all stations within the hydrologically homo- geneous region is an important measure to increase the accuracy of statistical analysis. 3. The belief that the flood frequency obeys the binomial theorem or Poisson's theorem is but to mix up the priori with the empirical probability problem. The binomial theorem, being a powerful weapon to deal with the problems of priori probability, has not been adquately and properly utilized in the hydrologieal frequency analysis. 4. Analyses have been made of the nature of distribution of shydrologieal series on the basis of Kaptyen's derivation of the skew distribution, which indicate: (1) That the theoretical interpretation of the log-probability law of the hydrologic phenomena by V. T. Chow is not sound; (2) that hydrologic phenomena being results of very complicated meteorological and hydrological processes, it is impossible to derive theoretically the law of distribution for the hydrological series. 5. The view that the flood frequency obeys the Gumbel's distribution is theoretically not sound and also not verified by actual data. 6. According to the nature of the mathematical treatments applied, the method of description of the empirical probability can be classified into three systems: (1) The methods of the generalization of the characteristic factors of the distributions, such as Pearson's curves, Goodrich's curves, etc.; (2) The methods of the modification of a fundamental distribution by series and polynomials, such as Gram-Charlier curves. curves, etc.; (3) The methods of transformed functions, such as the log-probability law, curves, etc. It should be remarked that not only Pearson's and Goodrich's curves are frequency curves of empirical nature, but even the theoretical laws, such as the normal law and the log-probability law, will be aceepted as curves of empirical nature, when used as models for empirical probability problem. 7. Hydrological frequency analysis should not be mystified and made absolute. Instead of free selections, the models of hydrological frequency curve should be uniquely selected and specified. Statistical parameters should be determined not solely by the short period data of single station, but also by the synthetic utilization of the data of possible more stations. 8. It is recommended that one of the two types of distribution, i.e. the log-normal frequency curve with both sides limited and the Pearson's type Ⅲ curve, may be selected as unified models. The author suggests that the K-value corresponding to recurrence intervals of say 10~4, 10~5, or 10~6 years may be selected as the upper and lower limits for the log-normal curve. For Pearson's type III curves, C_s should be treated not as independent but as dependent variables of C_v. 9. The proper way to select and determine the model frequency curve is to see whether it fits well with the actual data of grouped stations (stations to be grouped by regions for rainfall data and by C_v for runoff data) and the reasonableness of the extrapolating part. 10. Suggestions on the method of determination of x and C_v: For point rainfall, iso-x map may be utilized, and the mean C_v for each hydrologicregion may be adopted in order to minimize the errors from single stations and to avoid the discrepancies in results obtained from the same region. With regard to flood frequency analysis, flood mark reconnaissance must be utilized to determine the magnitude and the recurrence interval of the unusual flood. The x and C_v values of the floods and runoffs of hydrologically similiar river basins may be compared. Besides, the reasonableness of the results of frequency calculations as well as of the statistical parameters adopted therein may be checked by comparing runoffs and point-rainfall values of the same frequency.

我国近期水文频率计算方法的研究工作在选择方法,经验频率公式,参数的误差和利用我国水文资料检验各种频率线型等方面有了一定的成果和实用的结论[1],但是下面两个问题还没有获得解决: (1)能否从机率理论证明水文频率属于何种分布律? (2)水文频率曲线应当采用什么线型?如何确定参数?本文试图解答以上两个问题。本文分析了水文系列的时序性质和区域性质,把机率问题按先验、极限和后验三种基本性质对水文频率问题进行了分析;利用开布屯推导偏态分布的方法分析了水文系列的分布性质,并从而批判了有关水文频率肯定属于对数正态律,耿贝尔极限律或二项式定理等等说法。认为属于后验机率性质的水文频率,不能从机率理论证明它属于何种分布律。最后提出联合利用各站水文资料来选择线型和确定参数的方法,并建议在两端有限对数正态和皮尔逊Ⅲ型两种线型中选择一种作为统一采用的线型,对两端有限曲线提出了简易可行的确定上下极限的方法,对皮尔逊Ⅲ型曲线认为应该把Cs作Cv的倚变参数。

A preliminary study was made on the habitat and activity of E. sinensis in Lunghwa area,a suburb of Shanghai, from January to August 1959. Out of 53 houses examined, 27 (50.9%) were found to be infested with this cockroach—afact which indicated the wide distribution of the roach in the rural area. The main breedingplace, according to the present observation, is the loose soil under the kitchen stove. 24-hour observation was carried out to determine the activity of E. sinensis,and the recordwas made hourly. It...

A preliminary study was made on the habitat and activity of E. sinensis in Lunghwa area,a suburb of Shanghai, from January to August 1959. Out of 53 houses examined, 27 (50.9%) were found to be infested with this cockroach—afact which indicated the wide distribution of the roach in the rural area. The main breedingplace, according to the present observation, is the loose soil under the kitchen stove. 24-hour observation was carried out to determine the activity of E. sinensis,and the recordwas made hourly. It was found that the roach is chiefly nocturnal in habit. It appeared at 7P.M., and reached the peak of its activity between 8--11 P.M. Gradual quiescence ensued until6 A.M. at which time it disappeared almost completely from the surface of the soil. The majority of the population was found 2.5--4 cm. under the ground during day time,the deepest at. 5 cm. In the night, most of them were found on the surface of the soil or withinthe range of 1 cm. underneath, the deepest at 3.5 cm. The average crawling speed was also determined as follows: 1512.3 cm/min. 650cm/min and nymph 474.29 cm/min. Of the roaches 84.37% showed their activity within the rangeof 30 cm. on the ground near the base of the kitchen stove.

本文报告了中华地鳖活动习性的观察结果:调查了53户农村住宅,发现中华地鳖的户数有27户(50.9%),证明它的分布较为普遍,并表明它的孳生地点主要是在靠灶墙足的松土中。 它的活动时间自晚7时开始,8—11时达高峯,随后逐为减少,至翌晨6时全部消失 于地面。爬行速度,雄虫1512.3厘米/分钟,雌虫650厘米/分钟,若虫474.29厘米/分钟。白昼它在土中的深度以2.5—4厘米之间为最多,最深可达5厘米,但在夜晚,则以地面及1厘米深度处为多,最深仅达3.5厘米,活动距离的测定看出,占84.37%虫数是活动于30厘米距离之内,未见及活动于高出地面所在,说明它的活动范围较为狭窄。 并对它的孳生地,分布,活动的时间性及机制,与人类的关系等问题作了较详细的讨论。

 
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