Point at the existing problems of hydraulic prop management, this paper puts forward practical lease management. It obtains expected effects.

针对当前单体液压支柱管理中存在的问题，提出具体的租赁管理办法，取得了预期的效果。

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The headfirst forward roll requires the rollers to press down with feet, jump, prop up with arms and roll consistently.

鱼跃前滚翻动作，要求蹬、跃、撑、滚连贯，腾空高，滚翻圆滑。

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The headfirst forward roll requires the rollers to press down with feet, jump, prop up with arms and roll consistently.

鱼跃前滚翻动作，要求蹬、跃、撑、滚连贯，腾空高，滚翻圆滑。

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