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eachhatchway cover or hatchway beam when correctly positioned in the hatchway is ofsuch fit that any horizontal movement in the direction of its length will notresult in it overlapping its end supports by less than 65 mm inthe case of a hatchway cover and 75 mm in the case of a hatchway beam粗体字怎么理解?
在新年里先谢谢各位。 |
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