当新鲜的冻土暴露在空气中的时候，机器臂曾经两次尝试对冻土样本进行传送，但样本同铲斗粘在了一起，使这两次尝试都以失败告终。

Two attempts to deliver samples of icy soil on days when fresh material was exposed were foiled when the samples became stuck inside the scoop.

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把WZ25-20挖掘装载机作为研究样机，其反铲挖掘装置主要由动臂、斗杆、铲斗、导轨机构、回转机构和连接架组成。

Now WZ25-20 is regarded as an example, its backhoe device consists of moving arm, pole, bucket, guiding organization and rotation mechanism.

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对装载机动臂举升和铲斗收斗无力的故障原因进行分析，然后对其进行检修，排除故障。

This paper analyses the reasons of lack strength about loader lifts the movable boom and takes back the bucket, then repairs it and get rid of the troubles.

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