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sd
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     ±SD).
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     ±SD).
     ±SD);
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     Fuzzy SD Algebras
     模糊SD代数
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     Methods SD rats were i.g.
     方法SD大鼠灌胃(i.g.)
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  sd
A subjective survey, by SD method, showed that the tactility of wood was favorable and people preferred wood to other kinds of material.
      
By using simple sequence repeat (SSR) markers, we mapped the two semidwarf genes, sd-1 and sd-t2 on chromosomes 1 and 4, respectively.
      
Sd-t2 was thus named because the semidrawf gene sd-t has already been identified from Aitaiyin 2 whose origin could be traced back to Taiyin1.
      
The result of the molecular mapping of sd-1 gene revealed it is linked to four SSR markers found on chromosome 1.
      
The aim of this research was to investigate the effects of modafinil, a new wake-promoting agent, on vestibular function during 24 h sleep deprivation (SD) so as to provide experimental evidence for the rational use of this drug among air crew.
      
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In this paper, the properties of the SU3 wave functions, introduced by Elliott in 1958, are discussed in some detail. By means of the commutation relations of the infinitesimal operators of SU3 group, the internal wave functions x(α(λμ))K) can be calculated in a comparatively simple manner. With the use of the internal wave functions x(α(λμ))K), a formula of the fractional parentage coefficients for the SU3 wave functions ψ(x(α(λμ))KLM) is obtained. As examples the SU3 wave functions of 2 or 3 nucleons in sd...

In this paper, the properties of the SU3 wave functions, introduced by Elliott in 1958, are discussed in some detail. By means of the commutation relations of the infinitesimal operators of SU3 group, the internal wave functions x(α(λμ))K) can be calculated in a comparatively simple manner. With the use of the internal wave functions x(α(λμ))K), a formula of the fractional parentage coefficients for the SU3 wave functions ψ(x(α(λμ))KLM) is obtained. As examples the SU3 wave functions of 2 or 3 nucleons in sd shell are calculated.

本文详细地讨论了Elliott引入的SU_3波函数Ψ(α(λμ)KLM)=2L+1/C(λμKL)integral from(xΩ(a(λμ)K)×XD_(MK)~L(Ω)dΩ)的若干性质。利用SU_3群的无穷小算子的对易关系,可以较容易地求出“内部态”波函数χ(α(λμ)K)的表达式,并由此求出了波函数Ψ(α(λμ)KLM)的母分数系数(f·p·c.)。 作为例子,本文还计算出了sd壳中有两或三个核子的SU_3波函数Ψ(α(λμ)KLM)。

In this essay, the main defects and their causes of the old type coal drill,which were adopted in coal mine, are analyzed, and the new ideas used in the de-sign of the modern type SD-12 are discussed. Basing upon the experience of de-sign test and operation, the authors offer the empirical formula and data of selec-ting the suitable main size and reasonable electromagnetic load in the design of the induction motor. Furthermore, the authors introduce the designing and technical aspects of the modern drill,...

In this essay, the main defects and their causes of the old type coal drill,which were adopted in coal mine, are analyzed, and the new ideas used in the de-sign of the modern type SD-12 are discussed. Basing upon the experience of de-sign test and operation, the authors offer the empirical formula and data of selec-ting the suitable main size and reasonable electromagnetic load in the design of the induction motor. Furthermore, the authors introduce the designing and technical aspects of the modern drill, and point out the way to which further investigation should be taken in the future.

本文分析了过去矿山所使用的旧型煤电钻所存在的主要缺陷及原因,阐述了SD-12型手持式煤电钻电机设计的特点.根据设计、试验及运行的经验,给出适宜的电机主要尺寸、合理电磁参数的经验公式及具体数值范围.并介绍了新型煤电钻设计的主要特点及技术特征,指出手持式煤电钻今后的研究方向及任务.

This paper describes and presents the results of the experiments carried out to examine the performance characteristics of propeller series working in the slotted nozzles.After finishing some comparative tests, slotted nozzles designated D11 and SD11 were chosen and open water tests were carried out in combination with Ka-screw series of NSMB.The effects of main parameters of the slotted nozzles and propellers upon the performance characteristics are analyzed.The results show that the slotted nozzles will...

This paper describes and presents the results of the experiments carried out to examine the performance characteristics of propeller series working in the slotted nozzles.After finishing some comparative tests, slotted nozzles designated D11 and SD11 were chosen and open water tests were carried out in combination with Ka-screw series of NSMB.The effects of main parameters of the slotted nozzles and propellers upon the performance characteristics are analyzed.The results show that the slotted nozzles will effectively delay the separation of flowfrom the inner sides of nozzles and hence an improvement in performance is obtained as compared to those of the other ducted propeller series.Results of this investigation are presented in the forms of KT-KO- J curves, regression polynomials and BP-δ diagrams.

为了提高导管螺旋桨的效率、推迟水流从导管后缘内表面的分离,根据襟翼增举的原理,作者设计了一套后缘开缝襟翼剖面双体导管。初步试验后选择JD11、SD11两个双体导管与15只荷兰船模试验池的Κα系列螺旋桨相配合进行了敞水试验。根据试验结果;分析了双体导管及螺旋桨的一些主要参数对敞水性能的影响。同时,给出了敞水效率较高的SD11+Κα桨系列的敞水性征曲线、回归多项式及(1/2)B_p~δ图谱。

 
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