经办人的英文怎么说

经办人的英文：
operator

The operator O is the null operator.
算符O是零算符。

They are computer operators.
他们是计算机操作员。

monitor operator
之声监听员

It is a major operation. It is a very messy operation.
这是大手术，难度很大。

Has operator received pump instruction and operations manual?
操作者是否收到泵说明书和操作手册?