- I〔一点を中心に回ること〕(a) revolution；〔軸を中心に〕(a) rotation；〔自転〕(a) rotation；〔転がり〕a roll
回転する revolve, turn around [round]; spin；〔軸を中心に〕rotate；〔自転する〕rotate
- 月は地球の周りを回転する
- The moon revolves around the earth.
- 軸を中心に回転する
- rotate on an axis
- この扇風機は１秒に何回回転するか
- How many revolutions a second does this fan make?
- 彼女は一回転してプールに飛び込んだ
- She did a somersault in midair and dived into the pool.
- 回転式の展望室
- a revolving observation room
- II
- 1〔頭の働き〕
- 彼は頭の回転が早い
- He is bright [smart].／《口》 He's quick on the uptake.
- 頭の回転が遅い
- He doesn't have a very quick mind.／He's slow to catch on.
- 2〔資金などの〕circulation；〔資本・在庫品などの〕turnover
- 資本を回転させる
- circulate [rotate] capital
- 資金の回転を早める
- quicken 「the circulation [the turnover] of funds
- この商品は回転が早そうだ
- We can expect a quick turnover from these goods.
- あの店は客の回転がいい
- That store has a steady flow of customers.／《英》 That shop enjoys brisk custom.
- 回転椅子いすa swivel chair
- 回転運動rotary motion
- 回転運動回転運動する rotate ((on))；revolve ((about, around, round))
- 回転儀a gyroscope
- 回転競技〔スキーの〕the slalom
- 回転資金a revolving fund
- 回転軸the axis of rotation; a pivot; a shaft
- 回転数［速度］engine speed
- 回転ずしa revolving [conveyer-belt] sushi bar; a (popularly priced) sushi bar where customers select their food from a revolving conveyor belt
- 回転体a solid of revolution
- 回転ドアa revolving door
- 回転灯a revolving light
- この車の回転半径は５メートルである
- This car has a turning radius of five meters.
- 回転窓a pivoted window
- 回転面a surface of revolution
- 回転木馬a merry-go-round
- 回転翼〔ヘリコプターの〕a rotor；〔送風機などの〕a blade of a fan
- 回転率〔資産・負債などの〕the turnover rate [ratio], the rate of turnover；〔資金回転率〕turnover of funds
- 回転炉〔ロータリー窯〕a rotary kiln
