The special advantage of this roller is of high compaction efficiency, but its self moving speed is not stable.
它的主要特点是压实效率高，但自行速度还不稳定。
Sleeve compensator can meet the sealing requirements of any pipelines because it adopts the theory of high performance self-compaction dynamic sealing.
套筒补偿器采用高性能自压式动密封原理，能适应任何管道的密封要求。
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