Method of completing square is often used when transforming a quadratic form into a normal one, whose process is equivalent to making the relevant matrix contract diagonal., 二次型化标准形常采用配方法，而二次型化标准形等价于它 ...

The product is specifically designed to provide well-regulated supply for low voltage IC applications such as high-speed bus ...

看完《我们的歌》第七期，对单依纯、刘宇宁合唱的《女儿国》印象深刻刘宇宁。两位都是年轻一代歌手中的佼佼者，个人实力都很强，也参加过很多现场出镜的晚会，展示过真实实力刘宇宁。因此，对两人的实力很有信心，但是合唱除了实力还要看默契度与配合度刘宇宁。如果配合 ...