... double spiral staircase ==> 双螺旋楼梯 double spiral turbine ==> 双排量涡壳式水轮机 double splayed coping ==> 双坡压顶 ...
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double-discharge spiral water turbine
...charge density water spray 低喷放密度水雾 double-discharge spiral water turbine 双排量涡轮式水轮机 ; 双排量涡壳式水轮机 Turbine，double discharge spiral water 双出口水涡轮 ..
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