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  is known
     In this paper, a clear expression of the null distribution function of the likelihood ratio test statistics U that is considered by Hawkins (1977) is derived when σ2 is known. The numerical tables of the distribution funtion are given.
     本文对σ~2为已知的情况,导出了由Hawkins(1977)提出的似然比检验统计量U的简明且便于计算的分布函数表达式,并建立了分布函数的数值表。
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     A new expression of the quantitative phase analysis by X-ray without anyrelative calibration standard has been derived in the case of every sample,inwhich the composition of one phase is known,among those able to meet therequirements of Zevin's method.
     在一组能满足Zevin法要求的样品中,如果每个样品有一个含量为已知的相,可以导出X射线无标定量相分析新的表达式.
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     The said method can also be used to calculate the adsorption factor to tracer by porous medium if the effective porosity of the medium is known.
     而且 ,这种方法在介质的有效孔隙率为已知的情况下 ,还可以计算出多孔介质对示踪剂的吸附系数
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     This method may be applied to estimate the values of longitudinal dispersivity, retarding coefficient and equilibrium adsorption coefficient if the effective porosity of porous medium is known.
     而且, 这种方法在多孔介质的有效孔隙率为已知的情况下,还可计算出多孔介质对示踪剂的吸附系数。
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     In this paper it is shown that the basic inequality G(a)≤A(a),Cauchy inequality,Tchebychef inequality,Holder inequality,Lyapunov inequality,triangle inequality and Minkowski inequality are all equivalent to the simple proposition that a~2≥0 for every a∈R(set of real number),provided the proposition that the closure of the set of rational number equals R is known.
     本文在实数集合的紧致性为已知的前提下,证明算术平均值与几何平均值不等式,Cauchy不等式,不等式,Holder不等式,不等式,三角不等式和Minkowski不等式之间的互相等价性,而旦它们都等价于一个实数的平方不小于零。
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  “为已知的”译为未确定词的双语例句
     The other three known compounds were identified as mangiferin (Ⅱ), bellidifodin (Ⅲ) and bellidifodin-8-O-β-D-glucopyranoside (Ⅳ).
     化合物Ⅱ~Ⅳ为已知的(口山)酮衍生物,分别鉴定为芒果甙(mangiferin,Ⅱ),bellidifodin(Ⅲ)及bellidifodin-8-O-β-D-glucopyranoside(Ⅳ)。
短句来源
     The sufficient and necessary conditions of existence of the univalent harmonic orientationpreserving mappings f(z) are given,and f(z) satisfies the equation f =a(z)f z for given Beltrami coefficient a(z)= e iθ (z-a 11- a 1 z)(z-a 21- a 2 z) and maps unit disk U onto a given polygon P .
     给出a(z)= eiθ( z- a11- a1z)( z- a21- a2z)存在将单位圆盘单叶调和保向地映射为已知的多边形并满足给定的Beltram i方程fz= a(z)fz 的映射的充分必要条件.
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     the other three were identified as known stilbenoids: piceatannol (2) , (+)α-viniferin (3) and kobophenol A (4).
     其它三个分别鉴定为已知的类化合物 :piceatannol( 2 ) ,( +)α viniferin ( 3 )和kobophenolA ( 4 ) .
短句来源
     It is given that the sufficient and necessary conditions of existence of the univalent harmonic orientationpreserving mapping f(z) which satisfies the equation f =a(z)f z for given Beltrami coefficient a(z)= e iθ ((z-α)/(1-z)) m,m=1,2 and maps unit disk U onto a given polygon P .
     我们给出当a(z)=eiθ((z-α)/(1-αz))m,m=1,2时存在将单位圆盘单叶调和保向地映射为已知的多边形并且满足给定的Beltrami方程fz=a(z)fz的映射的充分必要条件.
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     The three other alkaloids have been identified as stephaboline(1),stephabyssine(4) and prostephabyssine (5),respectively.
     其他三种分别鉴定为已知的stephaboune(1),stephabyssine(4)及prostephabyssine(5)
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     Intelligence: the known and the unknown
     智力:已知的和未知的
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     Some previously known results are extended.
     同时推广了一些已知的结果 .
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     New and interest- ing results are obtained , which are a extention of the known results.
     本文的结果包含已知的结果作特例.
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     Contour patterns of cycloid are special cases of the conclusion of this paper.
     过去已知的摆线线型仅本文的特例。
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  is known
It is known [M4] that K?-orbits S and G?-orbits S' on a complex flag manifold are in one-to-one correspondence by the condition that S ∩ S' is nonempty and compact.
      
When the characteristic of k is 0, it is known that the invariants of d vectors, d ≥ n, are obtained from those of n vectors by polarization.
      
It is known thatT (A, D) tiles?n by some subset of?n.
      
It is known [7] that dualizing a form of the Poisson summation formula yields a pair of linear transformations which map a function ? of one variable into a function and its cosine transform in a generalized sense.
      
Implementing this point of view, Poisson Summation Formulas are proved in several spaces including integrable functions of bounded variation (where the result is known) and elements of mixed norm spaces.
      
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The preparation of two derivatives of iso-nicotinoylhydraziue,namely,sym-dichloro-acetyl-

1.合成了三种异烟酰肼的衍生物,即 sym-氯乙酰基-异烟醯基肼、sym-三氯乙酰基-异烟酰基肼及 sym-一氯乙酰基-异烟酰肼盐酸(?)菜碱。这三种衍生物对 B.sme-gmatis 的抗菌作用分别为1∶16,000;1∶8,000;1∶8,000。2.制备了八种2,6-二氨基异烟酸酯,即甲酯、乙酯、正丙酯、异丙酯、正丁酯、异丁酯、正戊酯、异戊酯。其中甲酯为已知物,馀为新化合物。其抗 B.smegmatis 的作用均为1∶2000。3.2,6-二氨基-异烟酰肼的抗 B.smegmatis为1∶2000;2,6-二氨基-异烟酰胺及2,6-二氨基-异烟酸均无抗 B.smegmatis 作用。

The isolation and identification of phloracetophenone 2,4-dimethyl ether from the root bark of Sapium sebiferum Roxb. (Chinese tallow tree) are reported.

从治疗腹水病的中药乌(?)根皮中提出两种结晶成分,熔点分别为81°及200°。前者已经证明为已知物对称-苯三酚乙酮-2,4-双甲醚,後者尚待研究。

In the recent years, the theory related to friction-lines has been independently developed both in Europe~[1] and here~[2-8], according the information~[1] reached the author in 1956. These investigations are based on the condition of least frictional resistance at a point.

塑压接触面之质点滑动线称“摩擦线”。滑动现象有两种基本类型,一为“长程滑动”,摩擦线为质点之长程连续轨迹,如抽拔,挤压,冲压等塑性过程中之滑动;一为“短程滑动”,质点仅在摩擦线上滑动一微小距离,如锻,轧,压力实验等过程中之滑动(小压缩时)。 过去对这两种滑动现象之规律未曾分别处理。本文将摩擦力接纯力学关系视为一切应力,即压应力p与摩擦应力τ,以边界平衡关系,相系于一应力函数F: τ=Fp, F=((l_1~2p_1~2+l_2~2p_2~2+l_3~2p_3~2)/(l_1~2p_1+l_2~2p_2+l_3~2p_3)~2)~(1/2) -1,p_1,p_2,p_3为内部主应力;l_1,l_2,l_3为p对p_1,p_2,p_3之夹角余弦。除视τ为p之函数τ=τ(p)外,对摩摩力之物理性质不作规定。 在此基础上,以住意质点滑动之最小摩阻功为基本条件分析滑向规律,一如任意质点滑动之最小摩阻力条件之于“陡线规律”。如此,则问题类于古典变分问题,变分方程引出两结论:在短程滑动中,滑向规律为已知之陡线规律;在长程滑动中为以下将提出之“等倾陡线规律”。并得到几个有关重要推论。

 
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