Sedimentation tank shall be cleaned or sand therein shall be replaced in case of drainagedifficulty.
当沉积池排水不畅时,清理并替换砂砾;
2
Sedimentary soil shall be cleared when reaching 50% of the capacity. Sedimentation tank shall be cleaned or sand therein shall be replaced in case of drainagedifficulty.
当沉积土达容量的50%时,清理沉积泥土;当沉淀池排水不畅时,清理或替换砂砾;
3
There are some disadvantages in present stereotaxic hemorrhage aspiration such as the difficulty of the drainage cruor and the repeat of the punctures.