self-compaction 自密实
self-compaction concrete 免振捣混凝土
free-vibration self-compaction 免振捣自密实
self-compaction premixed concrete 自密实预拌混凝土
underwater self-compaction concrete 水下自密实混凝土
free-vibration self-compaction concrete 免振捣自密实混凝土
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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