This paper deals with the effects of thermal and collision events which had been experienced by the Jilin(H5) and Qingzhen(EH3) chondrites before they fell to the earth .The HRTEM and opti-cal microscopic investigatio...This paper deals with the effects of thermal and collision events which had been experienced by the Jilin(H5) and Qingzhen(EH3) chondrites before they fell to the earth .The HRTEM and opti-cal microscopic investigations show that the Jilin chondrite has undergone more extensive thermal heating and two stages of collision,while the Qingzhen chondrite has experienced weak thermal events after the accretion of its parent body and one stage of moderate collision.The schematic dia-grams of the process of formation and evolution of these two meteorites are given in the present pa-per.展开更多
世界高科技园区知多少新西伯利亚高科技园区是原苏联一座综合性联合科研基地,集中了20多个国立科研机构,包括物理研究所、国际 X 射线断层照相术中心、热物理学研究中心等。科技人员达1.8万多人,是目前世界上人数最多、规模最大的高科...世界高科技园区知多少新西伯利亚高科技园区是原苏联一座综合性联合科研基地,集中了20多个国立科研机构,包括物理研究所、国际 X 射线断层照相术中心、热物理学研究中心等。科技人员达1.8万多人,是目前世界上人数最多、规模最大的高科技园区。慕尼黑高科技园区是德国的电子科学研究中心。研究微电子和微系统技术,被誉为"巴伐利亚硅谷",西门子公司和德国的 MBB 航天公司的总部都设在这里。展开更多
文摘This paper deals with the effects of thermal and collision events which had been experienced by the Jilin(H5) and Qingzhen(EH3) chondrites before they fell to the earth .The HRTEM and opti-cal microscopic investigations show that the Jilin chondrite has undergone more extensive thermal heating and two stages of collision,while the Qingzhen chondrite has experienced weak thermal events after the accretion of its parent body and one stage of moderate collision.The schematic dia-grams of the process of formation and evolution of these two meteorites are given in the present pa-per.
文摘世界高科技园区知多少新西伯利亚高科技园区是原苏联一座综合性联合科研基地,集中了20多个国立科研机构,包括物理研究所、国际 X 射线断层照相术中心、热物理学研究中心等。科技人员达1.8万多人,是目前世界上人数最多、规模最大的高科技园区。慕尼黑高科技园区是德国的电子科学研究中心。研究微电子和微系统技术,被誉为"巴伐利亚硅谷",西门子公司和德国的 MBB 航天公司的总部都设在这里。