The optimization design model of clearance between electrodeand dusting plate is set up, considering the efficient driving speed as a target function. 以粒子有效驱进速度为目标函数建立极-板间距优化设计模型；
The motor car disappeared in eddy of dust. 汽车在一片扬尘的涡流中不见了。
The forest will act as a defense against desert dust. 森林能起防御沙漠灰沙的作用。
The car raised quite a dust as we drove off. 我们走时车子扬起了一阵尘土。
A filter traps dust from the air. 过滤网可存住空气中的尘埃。
How many enemies bit the dust in the battle? 在这次战斗中打死了多少敌人？
