不使用分道通航制区域的船舶，应尽可能远离该区。

H a vessel not using a traffic separation scheme shall avoid it by as wide a margin as practicable.

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f制光圈(或称光圈)决定相机的景深(对焦区域)以及有多少光能通过镜头到达传感器。

The f-stop, otherwise known as the aperture, determines your depth of field (the area in focus) and how much light can pass through the lens to reach the sensor.

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漏涂仪显示的漏涂区域用粉笔或毡制粗头笔标识。

Holidays indicated by the detector shall be marked with chalk or felt-tip marker to identify the area to be repaired.

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