求翻译：生产同样的砖，固定式砖机至少4人生产，班产1800－2000块，移动式设备只需一人生产，班产800－900块，平均到每个人产量比固定式高一倍左右是什么意思？

At least four people to produce the same brick, fixed brick production, the middle classes 1800-2000 block, the mobile device is only one production class production blocks 800-900, the average yield to everyone about twice as high than the fixed

producing the same brick, brick machine fixed at least 4 production, producing 1800 - 2000 block, the mobile device is only required for a production, producing 800 - 900 block, the average production per person than a fixed-rate high-a

Produces the same brick, the stationary brick machine 4 people produces at least, shift production 1800-2000, the motion type equipment only needs one person to produce, shift production 800-900, average to each person productive ratio stationary type high one time about

Production of the same bricks, bricks of fixed type produced at least 4 people, class 1800-2000, mobile only one person production, 800-900, average yield to everyone around 1 time times higher than fixed

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