... 排出动压头：dynamic delivery head 排冰门：ice gate 排版直径：set-type diameter ...
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· 路线中的冰门（Ice Gate）可防止船只过于接近冰山，因为这些冰门都位于危险区以北较远处，船只必须要通过这些冰门。
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ice blade gate 冰刀片门
ice fall gate 排冰门
ice-control gate 流冰控制闸门
ice control gate 冰流控制闸门
ice-thaw device of sluice gate 闸门槽融冰设备
·2,447,543篇论文数据，部分数据来源于NoteExpress
Brett Willberg, who runs an ice factory, says he has never bothered to fix the electric gate in front of his operation, which does not close.
ECONOMIST: Business in America
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