无负压供水设备在高层建筑中的应用 - 给排水论文 - 建筑时空-中国建筑学会会员之家 - 建筑行业门户! 关键词：无负压；供水；高层建筑 [gap=602]key words：without negative pressure; water supply; tall building
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The "increasing payment base" also could relieve the puzzle of pension payment without negative externality but there was such defect as slow implement time or new public financial pressure.
“增加缴费人数”亦可以缓解养老金支付困境，且不存在负外部性，但推行时间缓慢，或将产生新的公共财政压力。
Safe: negative pressure combustion, not against fire, without the danger of explosion, and water, electricity, auto alarm, using PC control.
安全性高： 负压燃烧、不逆火、无爆炸之虞，且断水、断电、自动报警，采用PC控制。
And the automatic winding machine cannot work without the stable negative-pressure system.
而自动络筒机的顺利工作离不开一个稳定的负压系统。
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