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ss
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  “—s—s—”译为未确定词的双语例句
     increase of covalent bond (—S—S—) among proteins;
     蛋白质分子间共价键(—S—S—)力增大;
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     For the preconcentration of Cu, Pb, Cd in water with Thiuram Disulfide Resin and desorption of Cu, Pb, Cd using 5 ml 5N HNO3 and the interfering co-existent ions and separation was studied.
     秋兰姆二硫化大孔型螯合树脂含有—C—S—S—C—螯合基团,在pH5-10时能定量吸附Cu~(2+)、Pb~(2+)、Cd~(2+)离子,用5N硝酸能从树脂上定量解脱下来。
短句来源
     The sample has trans-gauche-trans conformations of C-C-S-S-C-C linkage.
     蛋白质分子侧链C—C—S—S—C—C构型为反式—扭曲—反式.
短句来源
     The protein have qauehe-qauche -qauehe conformation of C-C-S-S-C-C linkage ac- cording to S-S stretching vibration frequency.
     其 C—C—S—S—C—C 构型属于扭曲—扭曲—扭曲式。
短句来源
     The NbN absorbed on silver surface has gauche-gauche-trans conformation of C-C-S-S-C-C linkage.
     当NbN孢子吸附在银胶表面时,NbN孢子中的C—C—S—S—C—C链为扭曲—扭曲—反式结构。
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  ss
We fabricated several superconducting MgB2 thick films on stainless steel (SS) substrates by using hybrid physical-chemical vapor deposition (HPCVD) technique.
      
This indicated that the superconducting wires or tapes of MgB2 with a core of SS had the advantages of avoiding rigidity and brittleness in industrial handling.
      
Long-term sampling and analysis were conducted in a domestic wastewater treatment plant for the investigation on the characteristics of the representative contaminants in raw sewage such as SS, COD, BOD5, TP, and TN.
      
As a result, almost 100% of the SS was found to be suspended matter, as well as about 65% of COD, 60% of BOD5, 50% of P, and 20% of N.
      
Suspended solid (SS) was not detected in product water.
      
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An analysis of the existing data for doubly ionized calcium in the extreme Schumann region below 1010 was made, and practically all the bright lines in this region were classified. 16 new terms were tabulated. The isoelectronic sequence A I. K II. and Ca III was dismissed. An interesting new level 3s3p +s3S1, which combines with all the Ss23p5+s terms, is obtained in the analysis.

本文就已知之记录,分析钙之二度游离光谱,凡较强之线在Schumann氏范围之极端约λ1010以下者几全均识别;而所新得之十六项亦具表详列对AⅠ,KⅡ及CaⅢ之等电子序并有详细讲讨论更有3s5p~64s~3S_1项者,与3s~23p~44s诸项相配合,亦经分析酌定焉。

From noise voltage frequency spectral data Ss(ω) taken from carrier channels along many transmission lines in China, relative power spectra are calculated. Then by step-by-step integration method, the equations for corresponding correlation coefficients, or normalized autocorrelation ρ ate derived in terms of Ss(ω) and difference time τ. The shapes of the calculated ρ-τ curves are in general irregular, but in several cases where maximum Ss(ω) occurs at lower measuring frequency, p-r curves...

From noise voltage frequency spectral data Ss(ω) taken from carrier channels along many transmission lines in China, relative power spectra are calculated. Then by step-by-step integration method, the equations for corresponding correlation coefficients, or normalized autocorrelation ρ ate derived in terms of Ss(ω) and difference time τ. The shapes of the calculated ρ-τ curves are in general irregular, but in several cases where maximum Ss(ω) occurs at lower measuring frequency, p-r curves resemble the shape of damped cosinusoid e-aτ cos 2 πf τ. Finally the following parameters are calculated: thedifference time τ1, τ2 and τ3 at which | ρ|≤, | ρ|≤1/e2 and | ρ|≤ 0.05, exponentialattenuation constant a, average frequency and no. of zero crossings N, in intervals τ1, τ2-τ1, τ3-τ2 and τ3. It is found N/τ3f= 2, τ3 determines the upper limit of frequency ofsignal envelope for optimum reception. When higher carrier frequency (>40000 Hertz) is used, τ3 is usually smaller, this upper frequency limit 1/τ3 becomes higher.

根据在我国各区电力线路上测试的噪声频谱密度数据Ss(ω),先算出相对功率频谱密度,再用逐段积分法,求出相关系数ρ与相差时间τ的关系曲线。 在大值由Ss(ω)集中在一个较低频率的几个情况下,ρ-τ曲线的形状相当接近于e~(-ατ)cos 2πfx;在大值Ss(ω)比较分散的一般情况下,它的振荡形状是很不规则的。 最后算出|ρ|开始小于1/e,1/e~2与0.05的相关时间τ_1,τ_2与τ_3,以及在分段过程τ_1,τ_2-τ_1,τ_3—τ_2和整个过程τ_3中的平均振荡频率f,指数衰减系数α,过零点数目N等,其中N/τ3f很接近于2。第一分段τ_1中所得的参数和整个过程τ_3中所得的平均参数相差很远,因而第一分段的参数不能表示整个过程的特征。τ_3决定着通道中不积累误差的载波包络的频率高限。一般地讲,如果在通道中使用较高的载频(4万赫以上),所得的τ_3较小。因而可用较高的载波包络频率,也就是信号频率可以提高些而不致降低信号噪声比。

The Breeding work of Octoploid Triticale since 1957 is summarized as follows:1. The use of crossable gene. The genetic analysis of the crossability between common wheat and rye has shown that s, ss, SA, SN and SQ belong to a multiple allelic series of a single locus. The degree of crossability of these genes can be arranged in such an order, namely, s > ss > SA > SN > SQ. According to the degree of dominance, the order should be reversed as: SQ > SN > ss > SA > s. These findings were properly...

The Breeding work of Octoploid Triticale since 1957 is summarized as follows:1. The use of crossable gene. The genetic analysis of the crossability between common wheat and rye has shown that s, ss, SA, SN and SQ belong to a multiple allelic series of a single locus. The degree of crossability of these genes can be arranged in such an order, namely, s > ss > SA > SN > SQ. According to the degree of dominance, the order should be reversed as: SQ > SN > ss > SA > s. These findings were properly used in the routine work of crosses between wheat and rye.2. Chromosome doubling. Before treatment the wheat-rye hybrid seedlings should be slightly wounded on crown part by a sharp razor blade. Then the hybrid seedlings are exposed in 0.04-0.05% aqueous solution of colchicine for 4 days in room temperature not over 15℃. More than 90% of the treated seedlings could be recovered in greenhouse below 10℃. Among the recovered seedlings, about 40.8% of the sterile F1 hybrid plants would be turned to be partial fertile and various amount of seeds could be obtained from these successful plants. By this procedure, 4,700 primary Triticale strains have been created. In 1961, a new polyploidizing agent was discovered. The name of the agent is Fumiron, or Phenyl mercury-p-toluene sulfonanilide which is a fungicide and has comparable cfficiency in chromosome doubling as colchicine does.3. Fertility and seed plumpness. It was suggested that recombination of genes by hybridization and molding the segregation generations by heavy selection pressure could be the effective measures for the improvement of the fertility and seed plumpness of the octoploid Triticale strains. About two thousand of cross-combinations have been made with various parental stocks which were mostly selected from the primary Triticale strains, and in recent years, hybrid strains and elite plants in segregation generation were used in crosses more frequently than the primary types. The hybrid strains thus developed with normal fertility and acceptible seed plumpness were released to different localities with various natural conditions for yield tests.4. Regional tests. The data collected from regional tests have shown a tendency that the Triticale hybrid strains at present state might be successful in those regions where the yield of common wheat is usually very low and unstable due to severe natural conditions. For example, 10 Triticale strains were tested for yield performance with one rye and two common wheat varieties as checks in 1972-1973 growing season in Weining, a mountainous region of Kweiehow with altitude between 2-3 thousand meters. Eight out of ten Triticale strains have higher yields than both rye and wheat varieties. The best strain, Triticale No. 2 has a yield about 20% higher than that of rye, and 24% and 61% higher than the two varieties of common wheat Ahpo and No. 778 respectively. However, it, should not thus be concluded that the octoploid Tri-ticale is especially suitable for the marginal habitats of common wheat. It is only apparently seeming so at the present state of the Triticale strains which were developed from selection solely directed to the improvement of fertility and seed plumpness without much consideration for other characteristics of agricultural importance. Now, only the hardiness from rye and good seed quality from common wheat generally incoporated in the amphiploid have shown their favourable effect in the marginal regions of these two crops. This might be considered therefore that it is merely a preliminary stage of the Triticale program.

从1957年以来的八倍体小黑麦育种工作的主要结果总结如下: 1.可杂交基因的应用 小麦和黑麦之间的可杂交遗传分析表明s,s~S,s~A,s~N和s~Q是属于一个基因座的复等位基因。根据可杂交的程度,这些基因可以排成如下的次序,即s>s~S>s~A>s~N>s~Q。根据显性的程度,则其次序就要倒过来成为:s~Q>S~N>s~S>s~A>s。这个发现已被适当地应用于小麦与黑麦的日常杂交工作中。 2.染色体数加倍 小麦-黑麦杂种分蘖苗于处理前在基部用刀片切一浅伤口,而后浸在0.04—0.05%的秋水仙精溶液中4天,室温保持在15℃以下。在10℃以下的温室中,90%以上的处理苗能恢复生长。恢复苗中约有40.8%的F_1不育杂种植株能转变成部分可育的,并以这些成功株上将获得数目不等的种子。用这个方法,曾经制造了4,700个小黑麦原始品系。在1961年,发现了一个新的多倍体诱变剂。药品的名字是富民隆,或称对甲苯磺硫苯胺基苯汞,它是一个杀菌剂,加倍染色体数的效果和秋水仙精一样。 3.结实率和种子饱满度 通过杂交的基因重组和加重分离世代的选择压力是改进八倍体小黑麦的结实率和种子饱满度的有效方法。从小黑麦原始品系中选用各种亲本...

从1957年以来的八倍体小黑麦育种工作的主要结果总结如下: 1.可杂交基因的应用 小麦和黑麦之间的可杂交遗传分析表明s,s~S,s~A,s~N和s~Q是属于一个基因座的复等位基因。根据可杂交的程度,这些基因可以排成如下的次序,即s>s~S>s~A>s~N>s~Q。根据显性的程度,则其次序就要倒过来成为:s~Q>S~N>s~S>s~A>s。这个发现已被适当地应用于小麦与黑麦的日常杂交工作中。 2.染色体数加倍 小麦-黑麦杂种分蘖苗于处理前在基部用刀片切一浅伤口,而后浸在0.04—0.05%的秋水仙精溶液中4天,室温保持在15℃以下。在10℃以下的温室中,90%以上的处理苗能恢复生长。恢复苗中约有40.8%的F_1不育杂种植株能转变成部分可育的,并以这些成功株上将获得数目不等的种子。用这个方法,曾经制造了4,700个小黑麦原始品系。在1961年,发现了一个新的多倍体诱变剂。药品的名字是富民隆,或称对甲苯磺硫苯胺基苯汞,它是一个杀菌剂,加倍染色体数的效果和秋水仙精一样。 3.结实率和种子饱满度 通过杂交的基因重组和加重分离世代的选择压力是改进八倍体小黑麦的结实率和种子饱满度的有效方法。从小黑麦原始品系中选用各种亲本大约已经做了两千个杂交组合,近年来更多的是用杂种选系和分离世代中好的植株来进行杂交。由此而选育出来的,结实率正常,

 
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