About ISHIDA HITOSHI
About 原子力安全システム研
About KAWASHIMA KOICHIRO
About 超音波材料診断研究所
About nondestructive inspection
About crack
About higher harmonic
About gap
About Stainless Steel
About scanning electron microscope
About Nondestructive testing
About 間隙幅
About き裂
About 高調波
About 画像化