LalinCOCA²⁸⁰¹³⁶⁺⁵ 基本例句 n.拉林在西班牙;西经 8º06' 北纬 42º40' Sand mining operation in middle reach of Lalin River was outlined. The destructive mechanism of sand mining to the bank protection works and dams of the river were analysed. 阐述了拉林河中游采沙船的作业情况，分析了采沙船作业对护岸工程及拦河建筑物的破坏机理。 cnki