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- double base composition 双基组成
- The results show that PDADN can increase burning rate and energy of nitramine modified double base propellant. 结果表明添加叠氮酸酯是一种提高硝胺改性双基推进剂燃速与能量的切实可行途径。
- The genome content, gene order, and base composition conformed to the consensus vertebrate type mtDNA. 基因组结构, 基因顺序和碱基组成均与典型的脊椎动物类似。
- The combustion mechanism of RDX modified double base spheric small size propellants is presented. 通过密闭爆发器实验测定了RDX改性双基小粒药的燃烧特性,并对实验结果进行了理论分析。
- The bilge acidification in pore, because this washs a face,must want contain the black that can counteract acid in the grandma base composition. 毛孔里的污垢成酸性，因此洗面奶里必须要含有能中和酸的皂基成分。
- Two methods were employed to eliminate the destruction of secondary flame inhibitor to plateau effect of nitramine modified double base propellants. 运用包覆预处理和直接进行燃速调节两种方法，消除消焰剂对硝胺改性双基推进剂平台燃烧的破坏作用。
- The grain distribution and thermal decomposition characteristic of RDX in RDX modified double base spheric small size propellants are discussed. 讨论了改性双基球形小粒药中RDX颗粒的分布和RDX热分解的特点,提出了RDX改性双基球形小粒药的燃烧机理。
- The results show that the decompositions of RDX and double-base groups in modified double base spheric small size propellants are carryi... 随着压力的升高,改性双基小粒药的燃速将大于改型双基小粒药的燃速。
- The thermal decompositions of RDX-CMDB modified double base propellants with a composite burning catalyst were investigated by using of PDSC and TG-DTG. 摘要用PDSC和TG-DTG研究了RDX-CMDB改性双基推进剂在一种含能复合燃速催化剂作用下的热分解。
- Elastomeric modified cast double base (EMCDB) propellant, which has good mechanical properties and plateau burning effect, was successfully prepared by granule casting process. 用粒铸工艺制备出了力学性能好、具有燃烧平台的改性双基弹性体(EMCDB)推进剂。
- The start reading framae and stop codons, base composition in protein-coding genes and the codon usage of amino acids in Scolopendra multilane were compared with the three other myriapods. 本研究在蛋白质编码基因起始阅读框和终止密码子、蛋白质编码区的碱基组成、氨基酸及密码子的利用等方面把少棘蜈蚣与另三种多足类进行了比较。
- The manufacturing technology of seismic charge with high detonation velocity containing single base propellant and double base propellant is researched. 研制含单基药、双基药的高爆速震源药柱，并对其制造工艺进行了研究。
- Taking into account of the effects of base composition on base substitution, it was found that the transition-transversion bias was evident but not as pronouned as in mitochondrial DNA. 考虑碱基组成对碱基替换的影响后,转换对颠换的优势在四倍简并位点也存在,但不如线粒体DNA中显著。
- The effects of TPUE on the mechanical properties, technique properties, combustion and energy properties of nitramine modified double base propellant are studied. 研究了热塑性聚氨酯弹性体对硝胺改性双基推进剂的能量性能、力学性能、燃烧性能以及工艺性能的影响。
- Sonoki S, Hisamatsu S, Kiuchi A. High-performance liquid clromatographic determination of DNA base composition with fluorescence detection[ J]. Nucleic Acids Research 1993,21 (11 ) :2776. 许化溪;王胜军;黄锡全;等.;高效液相色谱法与荧光法测定细菌染色体碱基组成的比较[J]
- AbstractProgress in research on cast Al base composite enhanced by grain has been introduced. 介绍了铸造法制备颗粒增强铝基复合材料研究的进展情况；
- Temperature distribution of combustion flame of double base propellant,composite propellant and NEPE propellant(taking HNIW or HMX as oxidizer)were measured by using relative light intensity method. 采用相对光强度法测定了双基推进剂、复合推进剂及NEPE(氧化剂为HNIW或HMX)推进剂的燃烧火焰温度分布。
- Abstract: The influence of azide nitrate ester PDADN [1，3-propanediol, 2,2-bis(azidomethyl), dinitrate(ester)] on combustion property of nitramine modified double base propellant has been studied. 文摘:研究了一种叠氮硝酸酯PDADN对硝胺改性双基推进剂燃烧性能的影响。
- In order to improve the mechanical properties, a novel thermoplastic polyurethane elastomer(TPUE) with good miscibility with NG and NC is synthesized and used in modified double base propellant. 为了改善力学性能,合成了与硝化甘油(NG)、硝化纤维素(NC)具有良好相溶性的新型热塑性聚氨酯弹性体(TPUE),并应用于改性双基推进剂研究中。
- Customer base composition and customer loyalty 客户构成及忠诚度
