dust concentration的用法和樣例：
例句
- The settled dust on the walls of the tunnel should be moistened with sticking agent.Only in this way,could the dust concentration in the whole tunnel be effectively controlled.
對巷道周壁的粉塵採用噴洒粘塵劑固塵，才能有效地降低整個巷道的粉塵濃度。 - Noise and wooddust concentration in the air at the different workplaces in two departments for furniture and chipboard production have been measured.
測定了傢具和刨花板生產車間多種作業位置的雜訊以及空氣中木粉塵濃度。
