图标指示该需求当前被核对。
An icon indicates that the requirement is currently checked out.
印出指示说明通常有用，这样你在完成了安装步骤之后，你可以核对一下安装步骤。
It is often helpful to print out the instructions so you can check off the installation steps as you complete them.
核对压载舱遥控阀与其所指示的各舱名称是否一致。
Check ballast tank remote valves to ensure that the names indicated are accordance with the tanks.
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