backward recovery

基本解釋

Check that swimmer is pressing under chest, then backward and outward into recovery.
檢查隊員在胸部下壓水然后向后，向外推水至手臂出水轉入回臂；
The reason why the recovery efficiency of cleaning is low is that the classification effect of cyclone is not good and the technical equipment is backward.
精選回收率低的主要原因是旋流器分級效果差及工藝設備落后。強調(diào)銅鉬分離作業(yè)是精選工藝降銅排泥的關鍵環(huán)節(jié)。
Generally, the forward loading return vane could achieve higher total pressure recovery coefficient and much more uniform discharge flow than the backward loading return vane.
負荷分布形式對回流器流動結構和性能影響較大，前加載的負荷分布形式能夠得到更好的性能。
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