中国与马来西亚货物贸易分析

马来西亚是东盟的重要成员国,同时也是中国在东盟地区的最重要的贸易伙伴之一,中马货物贸易在中国与东盟各国的贸易往来中很具有典型性和代表性,但遗憾的是对于中马货物贸易的研究多年以来却一直鲜有著述。本文采用国际上常用的贸易模型和贸易分析方法,试图构建中国与马来西亚货物贸易往来关系的一个较为清晰的理论框架,对中马之间的货物贸易做初步的研究和探讨。     

基于升力线的OpenProp and CFD的AUV螺旋桨设计（英文）

A high-efficiency propeller can enable a long mission duration for autonomous underwater vehicles (AUVs). In this study,a new method with OpenProp coupled with computational fluid dynamics was developed to design a propeller for an Explorer100 AUV. The towed system simulation of the AUV was used to measure the nominal wake, and a self-propulsion simulation was used to measure the effective wake at the disc plane just in front of a propeller. Two propellers referring to the nominal wake (propelle...