Magnetic Iron Oxide material is the important basic materials in the field of modern electronical technology.
磁性铁氧体材料是现代电子技术中关键的基础材料。
Road Constructional Materials is an important basic course of highway and bridge major, and is vital in the specialized teaching reform.
道路建筑材料是公路与桥梁专业的一门重要的专业基础课，在专业教学改革中占有重要的地位。
Two important problems i. e. using the simplest method to DE - rive basic formula and using the plus assumption method in the strength of materials were discussed in this paper.
本文对用最简单的方法推导基本公式和“设正法”用于材料力学中两个重要问题提出商榷。
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