multiple granularity locking meaning in English

封锁方法称为多粒度封锁

Lock mechanism is used here . as a part of the national 863 planned project - " 2001 aa41 1320 regional modern integrated manufacture system development and application oriented city chengdu , deyang and mianyang " and the science and technology key project of sichuan province - " the engineering configuration intelligent cad technology oriented the process of design " , what the anthor had mainly done shown as below . introduced the characters of cooperative cad system , studied the locking mechanism on concurrent control of cooperative design , especially the multiple granularity locking mechanism , decriped the locking mechanism in rsise formal method , checked and implemented the locking mechanism in rsise
作为国家863计划项目： “ 2001aa411320以成德绵为核心的区域现代集成制造系统开发及应用”与四川省重大科技攻关项目： “ 01gg010 - 01区域制造业信息化关键技术与应用研究”的一部分，本文对结点的加锁机制进行了详细的研究，并且用raise形式化方法进行了描述和实现，具体工作如下： ( 1 )分析和总结了协同设计系统各种并发控制机制及其优缺点； ( 2 )研究了协同设计系统中并发控制的加锁机制。