In order to adapt the need of loading and unloading drill rod of iron gate-opening machine for large-scale blast furnace, the new change rock drill machine is designed.
为适应大型高炉开铁口机的装卸钎杆需要，设计开发了新型换钎机。
Soil unloading and rebound induced by large-scale deep excavation may affect the performance and integrity of existing piles inside the excavation zone, especially for up-lift piles.
由大面积大深度基坑开挖引起的土体卸荷回弹会对坑底桩基产生不利影响，这一影响对抗拔桩尤为突出。
Soil unloading and rebound induced by large-scale deep excavation may affect the performance and integrity of existing piles inside the excavation zone, especially for up-lift piles.
由大面积大深度基坑开挖引起的土体卸荷回弹会对坑底桩基产生不利影响，这一影响对抗拔桩尤为突出。
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