The method for measuring the plane strain fracture toughness klc has been introduce to high polymer bonded explosives ( pbx ) by systematically studying technologies concerning the shape of specimen , the depth and its machining of crack , the loading rate , the measurement of critical fracture load , and the computation of klc , etc . the method has been used to test and study klc of three typical high polymer bonded explosives which are j2 , jl , j3 respectively both at normal temperature and unmoral temperature 本文以高聚物粘结炸药为研究对象，对测试高聚物粘结炸药的平面应变断裂韧度所涉及的样品形状、裂纹深度及裂纹制备、加载速度、临界断裂载荷p _ q的确定及平面应变断裂韧度k _ ( ic )的计算等方面进行深入研究，建立了较为完善的炸药平面应变断裂韧度测试方法。
By adopting the viewpoint of jialing tool & mould alone manufacturing island ( ami ) in the thesis , it first analyzes the actuality of tool mould system in jialing group equipment and project company , and the development of domestic and overseas manufacturing advanced technology innovating . secondly , it consider establishing jialing - alone manufacturing island of tool & mould ( jl - amitm ) as a hardcore , with applying virtual cad / cam / cae system , rapid prototyping manufacturing ( rpm ) and capp ( computer aid process planning ) system on pdm ( product data management ) basis , to found the quality control system of a spot products , and to form a new manufacturing mode with variety and small quantity 本文应用独立制造岛技术观点，首先分析了嘉陵集团设备工程公司的工模具系统的现状和国内外先进制造技术的发展方向，接着考虑以建立以嘉陵工模具独立制造岛为核心，采用虚拟cad / cam / cae系统，应用快速原型制造技术，实施基于pdm的并行集成化capp系统，建立工模具制造质量控制系统，从而形成一种多品种、小批量的新型生产模式。
Dna fingerprints of 13 colonies of 5 strains , including 5 balb / c , 2 balb / c - nu / nu > 4 c51 1 cba / n and 2 dba / 2 from 7 factories of laboratory animal in the beijing and xi ' an areas , were studied with jl - 2 mulilocus probe and southern hybridization and the author compared the dna fingerprint with the biochemical marker enzyme method . it indicated that the fingerprint had 17 - 22 distinguishable fragments and these fragments had high polymorphisms . the fingerprints of balb / c and balb / c - nu / nu , which were abnormal at the hbb site with the biochemical marker enzyme method , was different from their normal groups 实验采用jl - 02多位点探针对北京和西安地区较大的7家实验动物生产供应单位的5个balb c群， 2个balb c - nu nu群， 4个c _ ( 57 )群， 1个cba n群和1个dba 2群近交系小鼠进行了dna指文图分析，并与常规生化标记分析法进行了比较，结果显示：所产生的dna指纹图的图带数均在17 - 22条，具有良好的多态性。
