Magnesium oxide thin films on Y-cut lithium niobate single crystal substrate are prepared by sol-gel processing then,a Mg-ion indiffusion process is applied to study its surface characteristics.

利用溶胶-凝胶工艺在Y切铌酸锂单晶基片制备氧化镁薄膜，经镁离子内扩散后，进行了其表面改性研究。

Producing metal Mg with magnesia supported by electrolytical chloride is a new method and also a good method to be propitious to environment.

利用氧化镁在化物电解质的支持下电解出金属镁是一种全新的生产方法,也是一种有利保护的冶镁方法。

Metal hydroxides like aluminium trihydroxide (ATH) or magnesium dihydroxide (MDH) are commonly used halogen-free flame retardants in polyolefins.

金属氧化物如氢氧化铝（ATH）或氢氧化镁（MDH）是常用的无卤阻燃体系。

Magnesium Hydroxide flame retardment has some characteristics of retarding fire,reducing smoke,cheap priceand safe stuff etc,therefore,it is applied widely.

氢氧化镁阻燃剂具有阻燃、硝烟、填充安全、价格低等特点岙被广泛开发研究。