求翻译：班长在签发命令票时，必须向操作人交代注意事项。操作前操作人必须与设备所属班长联系得到许可后方可进行操作是什么意思？

Squad leader in the ticket issuing command, you must explain to the operator precautions. Before the operation and the equipment operator must contact their respective team leader only after permission to operate

squad leader issued an order in votes, and must be accountable to the operator. Before the operation and equipment operator must contact the squad leader can only get a permit to operate

Class leader when signing and issuing life warrant, must to operate the human to confess the matters needing attention.Before the operation operates the human to have to relate after equipment respective class leader is under the permission only then to carry on the operation

Monitor when issuing the command must account to the operator attention. Operator must contact the unit belongs to the monitor before the operation to be allowed before the operation

Squad leader in the ticket issuing command, you must explain to the operator precautions. Before the operation and the equipment operator must contact their respective team leader only after permission to operate