如何实现“以铸代锻”——新型高强铝合金挤压铸造量产实例

概述了铝合金挤压铸造的优点,以及实现“以铸代锻”需要重视的三个方面:第一选择可热处理强化的高强铝合金;第二必须同零部件设计工程师密切沟通,不断优化铸件结构以利于挤压铸造工艺;第三必须有严格的铸造工艺控制,从不同方面减少挤压铸件的含气量。

An Empirical Study on Regional Differences of Higher Education Financial Aid in China

This paper uses empirical data to examine the issue of fairness of higher education student financial aid in China, noting different levels of regional economic development as the reason to explain the wide differences in available financial resources for student aid. Government efforts aimed at reducing the gap in recent years is discussed.

“守株待兔式执法”不正当性研究

行政执法行为是否正当,符合法律规定(合法)之外,还要评判是否符合行政目的(合理)和伦理规则(合情)。“守株待兔式执法”以不正当的执法目的,以行政不作为的形式,以合法的表象,温和而巧妙地实现经济或其他利益,违背了法治的宗旨和精神,必须从伦理教育、监督制约、责任约束等方面进行规制。