本文利用DTA 、 XRD、TEM、SEM等技术研究了三种K2O-B2O3-SiO2玻璃的析晶性能.The crystallization of three K 2 O - B 2 O 3 - SiO 2 glasses has been studied by using DTA, XRD 、 TEM and SEM technique.方法采用渗滤、析晶、重结晶三 步法 提取分离,库仑滴定法测定含量.Methods: Three - ...
A Federal Court case had been fast tracked to Wednesday.联邦法庭的一桩案件提前到星期三审理。These points are tracked by means of four huge hourglasses.这些分数是由四个巨大的沙漏来记录的.It was not long before I tracked down the lost watch.不久我就找到了遗失的表。Stud...
They used to buy ten kilos of beef in one lump.他们过去常买10公斤重的整块牛肉。A tantalising aroma of roast beef fills the air.空气中充满诱人的烤牛肉香味。Beef now costs well over 30 roubles a pound.牛肉现在卖到了每磅30多卢布。...
New Yorkers rap about parties and clubs, I rap about car chases and guns.纽约人在说唱音乐中表现晚会和俱乐部的情景，我则说唱飞车追逐和枪战的情景。When Bull and his men rob the payroll, Gene chases them down.当公牛和他手下抢夺工资后, 基尔追踪他们.It was one of these boring fi...