在恶劣的自然环境下,积污绝缘子随时可能发生闪络.Polluted insulators may flashover at any time under disadvantage weather conditions.实验表明表面电荷积聚使得绝缘子沿面闪络电压的降低竟然达到23.4%.For the insulator investigated the 50 % flashover voltage is reduced by 23.4 %...
Hmm. Apes that evolve into something humanlike? Pretty unlikely methinks.嗯, 类人猿进化成和人类一样? 我想不太可能.J: Hmm. Apes that evolve into something humanlike? Pretty unlikely methinks.约翰逊: 嗯, 类人猿进化成和人类一样? 我想不太可能.Recent research has ...
We all know that fats spoil by becoming rancid.我们都知道油脂变质后会发臭。Food is made up of carbohydrates, proteins and fats.食物由碳水化合物、蛋白质和脂肪构成。Carbon, hydrogen and oxygen combine chemically to form carbohydrates and fats.碳、氢、氧化合形成碳水...
Don't expect that niggard to invite you to dinner.别指望那个吝啬鬼会请你吃饭.The niggard contributed little to them.这个吝啬鬼几乎就没捐钱给他们.Never have we seen such a niggard like him!象他这样的小气鬼我们何时见过?...