mine total head 中文意思是什麼
mine total head
解釋
礦井通風兌壓頭-
Multistage centrifugal pumps ; mine drainage pumps, with pump total head up to 1000 m at speed of rotation 1500 l min
多級離心泵.轉數1500l min時揚程為1000米的礦用抽水 -
The mineral of lin is the head for the quantity in the seven greatest mineral of lin in the whole country, the total measure is 4, 600, 000, 000 tons, the personal status is high, and part of them is open - air to mine
磷礦儲量居全國七大磷礦之首,總儲量46億噸,品位高,大部分可露天開采。鹽礦儲量居全國內陸鹽礦第2位,總儲量約138億噸。
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