hard adj.硬的;困难的;棘手的;坚强的;残酷的;用力的;液态的;严寒的;确凿的adv.努力地;强烈地;严重地;坚定地
双语例句
The positive electrode is a rod of hard carbon fitted with a brass cap. 正电极是一个装有黄铜帽的硬碳棒。
Hard carbon is a promising anode material for lithium ion batteries due to its high capacity and low cost. 摘要硬碳具有嵌锂容量大,造价低,循环寿命长等优点,是制备高安全性锂离子电池负极潜在的优良材料。