应尽可能少地开临时出入孔并且禁止在舷顶列板和甲板边板上开孔。
But temporary access openings to be provided as few as possible and not permitted on sheer strake and stringer strake.
下水道出入孔：一种常带有盖的孔道，人可以由此孔进出排道、锅炉、下水管或类似设施。
A hole, usually with a cover, through which a person may enter a sewer, boiler, drain, or similar structure.
可以在船壳板、舱壁、甲板、墙壁等上开临时出入孔以便施工，应通过焊接对其进行适当的封闭并对其进行检验。
Temporary access openings may be provided on shells, bulkheads, decks, walls, etc. for convenience of works and to be closed in place by welding and inspected.
可以在船壳板、舱壁、甲板、墙壁等上开临时出入孔以便施工，应通过焊接对其进行适当的封闭并对其进行检验。
Temporary access openings may be provided on shells, bulkheads, decks, walls, etc. for convenience of works and to be closed in place by welding and inspected.
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