Distillation Summary Distillation is a widely used separation process. The separation is based on the volatility difference of the components to be separated

Can Germany and Japan be reinvigorated? THEY are the world's' second-and- third-large- economies. Measured at market exchange rates, Japan and Germany together make up about 20% of global output. And they are both in a mess

From The Economist print edition Panos Is economic inequality around the world getting better or worse? CRITICS of capitalism are convinced that the gap between rich and poor is widening across the world. For them, the claim amounts almost to an article of faith: worsening inequality is a sure sign of the moral bankruptcy of \the system\. Whether rising inequality should in fact be seen

From The Economist print edition Why the dollar still rules the world-and why the world should be grateful THE dollar is looking vulnerable. It is propped up not by the strength of America's exports, but by vast imports of capital. America, a country already rich in capital, has to borrow from abroad almost

Chapter Objective: This chapter serves to introduce the student to the balance of payments. How it is constructed and how balance of payments data may be interpreted

What is Packaging? 1. A definition of packaging Packaging is best described as a coordinated system of preparing goods for transport, distribution, storage, retailing, and use of the goods 2. The many things a package might be asked to do Packaging is a complex, dynamic, scientific, artistic, and controversial business function Fundamental function of packaging: contain protects/preserves transports informs/sells

1、利用锁相环路实现解调。有关这种解调方法的内容将在 2、利用调频波的过零信息实现解调。因为调频波的频率是随调制信号变化的,所以它们在相同的时间间隔内过零点的数目将不同。当瞬时频率高时,过零点的数目就多,瞬时频率低时,过零点的数目就少。(讲义下册P59图6.2.15)利用调频波的这个特点,可以实现解调。例如BE1调制度测量仪

Chapter 3 Fundamentals of Inviscid, incompressible Flow Theoretical fluid dynamics, being a difficult subject, is for convenience, commonly divided into two branches, one treating frictionless or perfect fluids, the other treating of viscous or imperfect fluids. The frictionles fluid has no existence in nature, but is hypothesized by mathematicians in order to facilitate the investigation of important laws and principles that may be approximately true of viscous or natural fluids

This chapter mainly deal with the properties of two-dimensional airfoils at mach number above 0.3 but below 1, where the compressibil ity must be considered

disrespected) social class: \the clones\. One expert believes the situation could be comparable to what occurred in the 16th century, when Europeans puzzled over how to classify the unfamiliar inhabitants of the Americas, and endlessly debated whether or not they were humans