mechanical trap是什么意思

用法例句

Re-designing of dredging machinery in “converting cargo ship to dredge”;

“货改耙”疏浚机械系统设计分析

Hence, mechanical dredging becomes more important.

近年来随着流域水资源利用率的提高,下泄流量逐年减少,粉沙淤泥质海岸带挡潮闸闸下港道淤积加重,且日趋板结,仅靠水力冲淤已无法满足防洪排水的要求,机械疏浚愈来愈重要。