1) cascading flow
梯级跌流
2) ladder of cascades
梯级跌水
4) board-level drop
板级跌落
1.
Lead- free solder joint reliability under board-level drop impact was investigated.
文中引入一块不同于JEDEC标准测试板的圆形测试板,探究板级跌落碰撞下无铅焊点的可靠性。
5) stepwise drop
阶梯式跌水
1.
Performance of integrated oxidation ditch with stepwise drop device and microporous aerators;
阶梯式跌水与微孔曝气一体化氧化沟性能研究
6) river cascade development
河流梯级开发
补充资料：跌跌绊绊
1.同"跌跌撞撞"。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条