A.80µm
B.90µm
C.100µm
D.110µm
A.1
B.2
C.3
D.4
A.6mm
B.8mm
C.10mm
D.12mm
A.3;95
B.5;90
C.2;85
D.3;90
A.10
B.15
C.20
D.25
A.15mm
B.16mm
C.17mm
D.18mm
A.镀银层厚度不宜小于20µm,硬度应大于120HV
B.镀银层厚度不宜小于50µm,硬度应大于100HV
C.镀银层厚度不宜小于20µm,硬度应大于100HV
D.镀银层厚度不宜小于50µm,硬度应大于120HV