shell lakeとは 意味・読み方・使い方

Based on the kinds of shell and their distribution, it is believed that the entire area used to be the bottom of a lake or pond during the Ice Age roughly 200 to 300 thousand years ago.発音を聞く 例文帳に追加

貝殻の種類に加えその分布などから、2～30万年前の氷河期には福知山盆地内全てが湖あるいは沼の底であったと考えられている。 - Wikipedia日英京都関連文書対訳コーパス

The surface layer of bottom mud 2 in the closed water area, such as a lake and an inner bay, is covered with a crushed shell material 4 made by crushing shells into the shape of sand or with a layer where sea sand, river sand, pit sand and/or dredge soil, etc. are mixed with the crushed shell material 4.例文帳に追加

湖沼や内湾等、閉鎖性水域の底泥２の表層を、貝殻を砂状に粉砕した貝殻粉砕物４又はこの貝殻粉砕物４に海砂、川砂、山砂及び（又は）浚渫土等を混合した層で被覆する。 - 特許庁