单词	锥形断面
释义	锥形断面conic section
随便看	landing stair landing stall landing stall speed landing stall--speed landing standard landing strake landing strip landing strip marker landing strips landing surface landing surveyors and landing waiters landing system landing t landing tee landing--tee landing tee, landing t landing threshold landing threshold speed landing through surf landing vehicle landing vehicle tracked enginner landing vehicle tracked enginner {= lvte} landing waiter landing-waiter landing wave