大尺寸的
7.Growth of Large?sized Sapphire Crystals by ?Temperature Gradient Technique(TGT)
8.Crystal Growth of Large-size and High-quality Cr:LiCAF by Bridgman Method
9.Study on affection of the angle errors of pentagonal prism on establishing datum plane
10.Application of Penta Prism in Establishing the Datum Plane for?Measuring Flatness in Large Scale Dimension

