| 摘要 |
<p>The filter lid has rim or flange which co-operates with another lid solid with the mouth of filter; the lid and latch are operated by hydraulic cylinders articulated at their ends. the smaller tubes, open at their lower ends, are surrounded by filter chandles; the filter has an upper chamber for collection and outlet of the clear liq. through pipe, and an electro-magnetic vibrator which activates the plate carrying the filter candles.</p> |
