[] () () when a company can give particular types of jobs only to members of particular unions（工种）分工，划分（某些工作职位只给予特定工会的会员的做法）◆By working as a machine operator, the cleaner had broken the demarcation rules.清洁工当机器操作员，打破了工种划分的规则。◆a rigid system of job demarcation死板的工种划分的制度