Also, the scoops swivel out of the way if they encounter anything solid, so the dredge does not destroy such protuberances.
同时，如果半球铲子遇到任何坚实的固体，会旋转起来而不至于撞坏海底岩石等隆起物。
2
Ruled out: relax fill, dredge flume; disassemble pump body to remove debris, rust; Calibration shaft removed or replaced a new shaft.
排除：放松填料，疏通引水槽；拆开泵体清除杂物、除锈；拆下泵轴校正或更换新的泵轴。
3
The downstream of Tarim river was setting off for a long-term and its eco-environment has deteriorated, the dredge engineering must be carried out so as to improve the eco-environment.