F 部——机械工程；照明；加热；武器；爆破本部目录(参见及附注省略)分部：发动机或泵····························································································································4F01 一般机器或发动机·····················································································7F01B 一般的或变容式的机器或发动机，如蒸汽机················································7F01C 旋转活塞式或摆动活塞式机器或发动机····················································11F01D 非变容式机器或发动机，如汽轮机··························································15F01K 蒸汽机装置；贮汽器；不包含在其他类目中的发动机装置；应用特殊工作流体或循环的发动机····························································································19F01L 机器或发动机用的循环操作阀································································23F01M 一般机器或发动机的润滑·····································································28F01N 一般机器或发动机的气流消音器或排气装置；内燃机的气流消音器或排气装置·30F01P 一般机器或发动机的冷却；内燃机的冷却·················································32F02 燃烧发动机·····························································································34F02B ...
