The evolution time in our calculation is chosen to be 12 gyr , which is the mean value of globular cluster ages in the galaxy 恒星蒸发对小质量球状星团的演化起着主导作用，大质量恒星的演化、银河系核球和盘的冲击加热以及动力学磨擦则主要影响大质量球状星团的演化。
2.
Pamri has performed over two hundred different market research projects for sino - foreign clients , including some of the world s largest companies . some of these clients include america s kodak , citibank , sprint and motorola ; france s saint - gobain , elf atochem , landis gyr and ing ; germany s getas ; japan s jetro and the hong kong trade development company . pamri possesses twelve years of specialized market research experience Pamri已先后为国内外客户提供了200余个不同内容的市场研究报告，包括一些世界著名的大公司，如美国花旗银行ge公司sprint公司柯达摩托罗拉，法国圣戈班埃尔夫阿托化学集团，瑞士兰吉尔，荷兰ing ，德国盖塔斯，日本贸易振兴会，香港贸易发展局等。
