您要查找的是不是：
- portable dust counter 携带式尘埃计
- filter-paper method dust counter 滤纸法尘埃计
- dust counter with light scattering method 光电尘粒计数器
- A Dust Counter and Its Remote Sensing with Single-chip Microcomputer 采用单片机实现智能尘埃计数器及其遥测
- 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。
- Bob tuned in his portable radio to a record show. 鲍伯收听手提收音机的唱片广播。
- Completely portable and very light weight. 便携式的，而且重量很轻。
- 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。
- There was an enormous cat crouching on the counter. 柜台上蜷伏着一只硕大的猫。
- Portable telephones are very popular nowadays. 现今，移动电话非常普及。
- How many enemies bit the dust in the battle? 在这次战斗中打死了多少敌人？
- He found that little TV extremely portable. 他觉得那台小小的电视机携带极其方便。
- He placed the money on the counter. 他把钱放在柜台上。
- The city lay in the dust after the battle. 战斗结束后，全城成为废墟。
- I bought my son a portable typewriter. 我给儿子买了一台手提式打字机。
- The dust on the shelf show up in the sunlight. 在阳光照射下能看见架子上有灰尘。
- Can the goods be refunded at your counter? 你们柜台的商品可以退吗？
- The document had been typed on a small portable. 这份文件是用便携式打字机打的。
