1) pressure exponent
压力指数
1.
To investigate from micro angles the effects of NGu on the pressure exponent change of burning rate of nitramine propellant containing RDX,the quenched experiments of gun propellants with RDX and NGu were carried out by rapid chamber depressurization in an ignition-and-combustion simulator under the pressure about 35 MPa.
为从微观的角度研究NGu对含RDX的硝胺发射药燃速压力指数改变的影响,采用改进的小型点火燃烧模拟装置,在35 MPa左右对几种发射药进行低压中止燃烧实验。
2.
The effect of CL-20, AP, Al power and combustion catalyst on combustion properties (burning rate and pressure exponent)of CL-20-NEPE propellant was studied with designed formulation [NB(PEG/NG/N-100/C2),NB/CL-20,NB/CL-20/AP,NB/CL-20/AP/Al,NB/CL-20/AP/Al/Ct] , in which the ingredients are added one by one, and compared with that of RDX-NEPE propellant.
实验结果表明:CL-20取代RDX-NEPE推进剂中的RDX可使推进剂燃速大幅提高,但含CL-20的NEPE推进剂的压力指数高于含RDX的NEPE推进剂,且难以降低;AP质量百分含量为70%的NEPE推进剂NAP的燃速在4～10MPa范围内呈现一平台。
3.
particle size of AP,catalysts on burning rate and pressure exponent were discussed.
实验研究了含铝AP/HTPB推进剂的配方,讨论了燃速及压力指数与配方参数的关系。
2) pressure index
压力指数
1.
The results show that nano-CuO is composed of well-dispersed spherical particles with an average size of 10-15 nm; the burning performance of double-base propellant has obvious change after adding nano-CuO; pressure index of the propellant is reduced from 0.
结果表明,制得的纳米CuO为球形,粒径为10～15nm,具有较好的分散性;纳米CuO加入到双基药中,发射药的燃烧性能有明显的变化,其压力指数由0。
2.
The burning rates and pressure indexs could been calculated when the chemical compositions of the propellant(formula) and the pressures were given.
用户不仅能根据推进剂的化学组成(配方)和给定压强计算燃速、压力指数等参数,还可根据给定的燃速和压力指数等调整推进剂配方组成,对缩短固体推进剂研制周期和节约研制成本具有重要意义。
3) Ecological tension index
生态压力指数
1.
Based on the principle of ecological footprint,this research put forward three concepts which were ecological tension index,ecological occupancy index and ecological economic coordination index as indicators system of ecological safety assessment.
本文在生态足迹原理的基础上,提出生态压力指数、生态占用指数和生态经济协调指数3个概念,并将其作为生态安全评价的指标体系。
2.
Based on the principle of ecological footprint,ecological tension index and ecological occupancy index for the evaluation of ecological security are presented,and the standards of ranking are constituted.
在生态足迹原理的基础上,将生态压力指数作为生态安全评价的指标,同时制定了相应的指标等级划分标准,对青海省1985—2003年的生态足迹和生态承载力进行了测算,并利用生态压力指数及其等级划分标准对其生态安全进行了试评价。
3.
Ecological tension index and classification criteria were used to evaluate ecological safety of 147 countries in the world and some provinces,cities and counties of China.
在生态足迹原理的基础上,提出生态压力指数,并将其作为生态安全评价的指标,制定了相应的指标等级划分标准。
4) grazing pressure index
放牧压力指数
5) Propellant pressure exponent
推进剂压力指数
6) Pressure augmentation index
压力增强指数
补充资料：迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数
迁移效率指数、偏好指数和差别指数迁移效率指数是用于测定两地间人口迁移效率的指标。它是净迁移对总迁移之比。计算公式为:EIM一摇寿纂拼又‘。。上式中，}人么夕一材方}为i、]两地净迁移人数;从少+材户为i、]两地总迁移人数;El入了为迁移效率指数。 EIM的取值范围为。至100，如某一地区的值越大，反映迁移的的影响也越大。如果计算i地区与其他一切地区之间的人口迁移效率指数EIM厂，则: }艺材。一芝Mj、}EIM汀艺。+乏M，(j笋i) 迁移偏好指数是从一个地区向另一地区的实际迁移人数与期望迁移人数之比。计算公式为:____M.___材尸2行一:一二子一一不石一二，么M“ 了厂‘.厂‘、八 }二不十二六二1 、厂厂7上式中，M“为从i地迁到j地的实际迁移量;艺材。为总的人口迁移量;尸为总人口;M尸I，j为迁移偏好指数。通过计算迁移偏好指数，可以反映各地区的相对引力。 迁移差别指数是反映具有某种特征的迁移人口与非迁移人口区别的指数。例如，专业技术人员的人数所占比重，各种文化程度人数所占比重等，以便研究人才流失和其他间题。计算公式为:M‘从IMD、一翌不丝xl。。 .义V‘ N上式中，M为迁移人数;M，为具有i特征的迁移人数;N为非迁移人数;N‘为具有i特征的非迁移人数;了八了D、为迁移差别指数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条