Today, I played with the white dust on the counter at work for the last time.
今天是我最后一次玩弄柜台上的白色灰尘。
2
Total bacterial count of air and dust particle count were measured by plate sedimentation method and GLJ-BG-type dust particle counter.
用平板沉降法和GLJ - BG型尘埃粒子计数仪分别测定了空气中的细菌总数、埃粒子数。
3
The causes of concentration over-standard of dust emission are analyzed and counter measures to improve dust collection efficiency are put forward in this article .