A number of recent variations have further demonstrated the utility of the 1, 3 - dithiane system.几种最近的变体进一步阐明了1, 3- 二硫杂环已烷体系的用途.The salesperson demonstrated a new washing machine.推销员当众演示新式洗衣机的优点。The feasibilities of sma...
Over the years he's demonstrated a certain prescience in foreign affairs.这些年来，他已经在外交事务方面表现出一定的预见性。The BBC has just successfully demonstrated a new digital radio transmission system.英国广播公司刚刚成功地演示了一套新的数字无线电传输系统。Cather...
预先装配的平行钢丝索与结构钢缆相比, 不需要预拉.Preassembled parallel wire strands, in contrast to structural strands, do not require prestretching.分析了7075-T651合金厚板预拉伸断裂的原因.The crack causes for pre - stretching plates of 7075 T 651 alloy are a...