Maintenance free? The oxymoron developed by marketing men in the 80s, who'd clearly no knowledge of thermodynamics. Dr Mike McDonagh takes us back to basics with the water-loss equations, which show why water loss happens and why batteries fail.
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机译:免费免维护? 80年代营销人员开发的矛盾,谁显然不了解热力学。 Mike McDonagh博士将我们带回基础的防水方程,这表明为什么水丢失发生,为什么电池失败。
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