重型运土设备使用时,操作人员只能看到有限的区域,因此,必须指派矿口监工随时警告操作人员在操作位置上无法发现的危险。
It is, therefore, essential that a banksman be appointed to warn the operator of hazards that cannot be seen from the operator's position.
一个存储类仅能有一个设备管理器,可指派给一个存储系统。
A storage class can only have one device manager and can be assigned to one storage system.
一个设备管理器可指派给多个存储类。
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