= caisson, n. 2a. Obsolete. rare.
单词 | θ209616 |
释义 | society > occupation and work > industry > building or constructing > building or providing with specific parts > specific parts built or constructed > [noun] > foundation(s) > chest used in laying underwater foundations (2) pont1721 = caisson, n. 2a. Obsolete. rare. pontoon1859 A float used in salvage and for other purposes, which can be lowered or raised by taking in or expelling water; = caisson, n. 2c 2d. |
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