1)sand gravel filter,砂礫過(guò)濾機(jī)2)sand filter,砂礫過(guò)濾器3)sand and gravel filter,砂礫石過(guò)濾器4)rapid sand filter,快速砂礫過(guò)濾器5)gravel and sand filter bed,砂礫濾床6)machine-made gravel sand,機(jī)制礫砂
用法和例句
With the extensive using of the machine-made sand and shotcrete in engineering, the application of the machine-made gravel sand shotcrete is emphasized by constructor.
