生活离不开数学，也离不开圆锥曲线．当我们用“曲线与方程”的观点观察与分析身边的某些实际问题时，便会发现圆锥曲线就在我们的身边，它们能帮助我们解决许多实际问题．
The low-voltage-electromagnetic forming was applied to powder compaction. A series of experiments was performed to compact aluminum, copper and tin powders in a
To utilize industrial residue as building materials is not only the demand for modern concrete technology but also the requirements for maintaining ecological b
经过高一学年的努力学习，同学们已经掌握了相当的英语词汇和语言知识，打下了比较扎实的语言基本功，具备了比较强的听、说、读的能力，希望在写的能力上也有所提高。但是写作是一项
“分解主旨，设点分述”能为写作提供一个支点，一个思路上的强有力的支点。这一支点是一种实用便捷的构思方式，是一种表达思想、抒发情感、吐露心声的有效手段。化大为小、化虚为
The infuence of Cu dopant (x) and sintering temperature(Ts) on the troansport propeties of La2/3Ca1/3Mn1-xCuxO3 series samples prepared by Sol-Gel technique was
倒装句型是中学英语中的重要语法项目和重要考点之一。任何倒装句型都有其标志，这个标志也是构成倒装句型的条件。因此，只要搞清楚倒装标志就可以巧记倒装句型。 一、 寻找完全倒装标志，巧记完全倒装句型 所谓完全倒装句型是指当某一特点内容置于句首时，将谓语动词直接提前置于该特定内容后面而构成的倒装句型，其标志通常为： 1．Here, there, in, out, up, down, awa
An effective analytical approach is developed for the problem of particulate composites containing spherical inclusion with imperfect interface between the matr
The effect of the melt superheating temperature on the as-cast microstructure of a cast nickel-base superalloy M963 has been investigated. The results show that