多回转电动执行机构
multi-rotary electric actuator
挑杆回转摆动机构
rotating and swinging mechanism for ram
厂用电动机回路
auxiliary electric motor loop
发动机机油压力回路
engine oil pressure circuit
发动机机油压力输入回路
engine oil pressure input circuit
韦氏急回机构
whitworth quick return mechanism