青青草欧美亚洲日本,日韩人妻中文字幕有码,日韩外围三级在线观看,国产av国,亚洲天堂网中字成人区,久操国产在线资源,欧洲亚洲天堂精品好看,伊人a视频,欧美有码一区二区

HS-PSTT Large Range Type Tester
■Range of silicon: 0.0001～19999ohm.cm
■Range of germanium 10 e-4～10e3ohm.cm
■Hot and cold probe
■Ruby  three probe
■Both needle and digital display, assuance the right.result