1·Slip-ring motor can be used in conjunction with time delay relays for floor operated cranes to improve their travelling quality during start and inching.
为改善地面操作起重机的起动、点动运行性能，可选用绕线型电动机加外延时继电器控制。
2·This machine adopts electric and hydraulic combine control. It has three working procedure, i. e. inching, manual and auto.
本机采用电气、液压联合控制，具有点动、手动和自动循环三种工作程序。
3·Before manually starting up, inching or operating the equipment, check shall be conducted on it to confirm no man or foreign material stays inside the machine.
在手动、点动、运转设备前要检查，确认机器内无人、无异物。