The paper introduces the principle of the dustmonitor. Especially explains the principle and application of the transmission method and the scatter method.
本文介绍了测尘仪器的基本原理，着重阐述了透射法和散射法的基本原理和实际应用。
2
My family thinks I bought a brand new high resolution monitor — but all I did was wipe off the dust and fingerprints.
我家人以为我买了一台崭新的高分辨率显示器——但实际上我所做的只是擦去了外面的灰尘和手指印。
3
A given country might want to monitordust storms, measure rice yields or track population migrations.