A.結(jié)構(gòu)膠 B.耐候膠 C.泡沫棒 D.防銹漆
A.±1mm B.±2mm C.±3mm D.±4mm
A.0.1~0.5mm B.0.3~0.5mm C.0.2~0.4mm D.0.5~1.0mm