相反地，诱导式发动机可以自冷却，这样就省去了笨重的散热片、冷却风扇、水泵和与此相关的铅用品制造。
An induction motor, by contrast, can be cooled passively-and thereby dispense with the hefty radiator, cooling fan, water pump and associated plumbing.
目的观察排铅咀嚼片对铅排出量及对儿童健康的影响。
To observe the effect of Paiqian chewing tablet on lead discharging and health in children.
介绍了铅精炼阴极片生产联动线存在的问题，分析了产生的原因，叙述了改造实践。
The paper presents the problems of joint production line for lead cathode, analyzes the reason, describes modification.
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